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Significance of nanoparticle radius and inter-particle spacing toward the radiative water-based alumina nanofluid flow over a rotating disk

  • Muhammad Ramzan , Showkat Ahmad Lone , Abdullah Dawar , Anwar Saeed , Wiyada Kumam EMAIL logo and Poom Kumam EMAIL logo
Published/Copyright: January 30, 2023
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Abstract

The study of nanofluid flow over a rotating disk has significant importance because of its enormous range of implementations, including cancer treatments, chemotherapy, nanomedicines, fermentation sciences, selective drug delivery, food sciences, biosensors, biomedicines, and electronics. Due to these applications of nanofluid, the present problem investigates the magnetohydrodynamic flow of nanofluid with nonlinear thermal radiation and viscous dissipation. In this analysis, the aluminum oxide nanoparticles are mixed with water. Furthermore, the mechanism for inter-particle spacing and radius of aluminum oxide nanoparticles on the dynamics of the two-dimensional flow of nanofluid are investigated. The present problem is modeled in the form of partial differential equations (PDEs), and these PDEs are converted into ordinary differential equations with the help of suitable similarity transformations. The analytical solution to the current modeled problem has been obtained by using the homotopy analysis technique. The main purpose of the present research work is to analyze the behavior of the velocity and temperature of the nanofluid for small and large radius of the aluminum oxide nanoparticles and inter-particle spacing. Also, the role of heat transport is computed for linear and nonlinear thermal radiation cases. The major findings and principal results of this investigation are concluded that the primary velocity of nanoliquid is augmented due to the intensification in suction parameter for both the small and larger radius of aluminum oxide nanoparticles. Furthermore, it is perceived that the heat rate transfer is larger when the Eckert number and nanoparticle volume fraction are higher for both nonlinear and linear thermal radiation cases.

1 Introduction

The mixture of nano-sized particles (nanoparticles) suspended in a base liquid is known as nanofluid. Nanofluid is used for the improvement of the rate of heat transmission, and its thermal conductivity is higher compared to the base liquid. Nanofluids are used in several manufacturing and engineering fields. So, the applications of nanofluids are vehicle thermal management, fuel cells, hybrid-powered engines, refrigerators, microelectronics, heat transfer, engine cooling, pharmaceutical processes, heat exchangers, etc. Due to these applications, many investigators used the phenomena of nanofluid in their field of study. Shamshuddin and Eid [1] examined the mixed convection flow of water-based silver ( Ag ), copper ( Cu ), and gold ( Au ) nanoparticles with the Joule heating effect under the stretched surface. They found that the Nusselt number is higher for Cu and Au nanoparticles. Tayyab et al. [2] deliberated the upshot of the magnetic field over the rotating flow of nanoliquid and analyzed that the increment in the Brownian motion parameter increased the concentration profile of the nanofluid. Ramzan et al. [3] addressed the bioconvective flow of Williamson ferro-nanofluid containing the copper oxide ( CuO ) and iron oxide ( Fe 3 O 4 ) nanoparticles toward the stretched surface. In this assessment, the increasing performance of the nanofluid concentration is determined due to the activation energy. Ahmed et al. [4] have determined the role of Maxwell nanoliquid flow above an exponentially stretched surface. In this investigation, it was found that the liquid velocity graph diminished against higher estimates of Deborah’s number. Abd-Alla et al. [5] have studied the effect of the viscous dissipation and heat transport on the magnetohydrodynamic (MHD) peristaltic radiating fourth-grade nanofluid flow, and they obtained the solution of their model numerically through the implementation of the fourth-order Runge–Kutta scheme. Dawar et al. [6] have scrutinized the MHD flow of Cu / CuO nanoparticles with Brownian and thermophoresis diffusivity between the two parallel plates. In this inquiry, they obtained that the Cu / CuO nanoliquid flow speed is decreased when the nanoparticle volume fraction is enlarged. Hafeez et al. [7] have discussed the prevalence of the Joule heating effect on the Oldroyd-B nanofluid flow across the rotational disk. Nabwey et al. [8] addressed the simulation of the Carreau nanoliquid flow with the magnetic flux, motile microorganisms, and chemical reaction effects under the inclined stretching cylinder and obtained that the magnitude of the drag force is increased for the power law factor. Shafiq et al. [9] used a moving thin needle to study the flow of nanofluid with Soret and Dufour numbers by using the convective heat conditions and obtained that the temperature of the nanofluid is enhanced for increasing values of the Brownian motion parameter. Colak et al. [10] have inspected experimentally the flow of Powell–Eyring nanofluid along the application of Darcy–Forchheimer and motile microorganisms toward the stretched surface. They have obtained that the drag force coefficient is rising due to the increase in the Darcy–Forchheimer parameter. Shafiq et al. [11] presented the simulation of the Newtonian heating conditions on the flow of Walter-B nanofluid under the Riga surface. Bhatti et al. [12] have simulated some physical characteristics of cobalt oxide ( Co 3 O 4 ) and graphene ( GO ) nanoparticles in the numerical study of the hybrid nanofluid toward the elastic circular surface. Rashidi et al. [13] have demonstrated the applications of the nanofluid in different arenas of the industrial and engineering level. They also discussed the significance of entropy generation and heat transport. More studies related to nanofluid flow problems are discussed [14,15,16,17].

In the last few decades, for the enhancement of the thermophysical properties of fluids, scientists and researchers have developed different techniques. In heat transport, the addition of the nanoparticles enhances the thermal conductivity and the thermophysical properties of fluids. Khan et al. [18] described the simulation of the mixed convection hybrid nanofluid flow comprising the Cu and aluminum oxide ( Al 2 O 3 ) nanoparticles with a heat source/sink. Numerical simulation of their model is obtained with the implementation of the bvp4c technique. Acharya et al. [19] demonstrated the mixing of graphene oxide nanoparticles in a water-based liquid for the study of a two-dimensional nanofluid model. In this work, they also discussed the liquid–solid interfacial layer and nanoparticle diameter for the evaluation of the thermal integrity of the flow. Cao et al. [20] described the comparative study of carbon nanotubes, Al 2 O 3 , and graphene oxide nanoparticles on the ternary hybrid nanofluid flow with partial slip conditions, and they used water as a base fluid. Gangadhar et al. [21] carried out the study of 3D blood-based micropolar hybrid nanofluid flow. In this investigation, they used Au and magnesium oxide ( MgO ) as nanoparticles. Akram et al. [22] reported the MHD flow of peristaltic nanofluid by using the boron nitride nanotube nanoparticles in an ethylene glycol base fluid. Fares et al. [23] used the Ag nanoparticles in water base liquid for the study of magnetized Darcy–Forchheimer flow and irreversibility reaction in a square enclosure. In this simulation, they initiated that a higher nanoparticle volume fraction increased the nanoliquid Nusselt number. Ramzan et al. [24] discussed the influence of the MHD flow of nanofluid by using the bidirectional stretched surface with Hall current. Furthermore, they mix up the Fe 3 O 4 nanoparticles in a Vacuum pump oil base fluid for the formation of the nanofluid. Waini et al. [25] discussed the comparative mixtures of Al 2 O 3 and Cu nanoparticles on the radiative micropolar nanofluid flow through the existence of the magnetic and viscous effects. In this scrutiny, water is taken as a base liquid. Gumber et al. [26] have determined the physical features of the CuO and Ag on the flow of micropolar hybrid nanofluid with heat transport toward the vertical plate. They observed that the rate of heat transport is enhanced due to the addition of nanoparticles in water base fluid. Acharya [27] presented the numerical study of ferro-nanofluid with a mixture of CoFe 2 O 4 nanoparticles in base fluid water under the rotating disk. In this observation, an increment in fluid temperature is noted for higher nanoparticle diameter. Acharya [28] examined the role of solid–liquid interfacial layers and nanoparticles in the flow of ferro-nanofluid with the magnetic field past a spinning disk. Acharya [29] discussed the effect of the Al 2 O 3 nanoparticles on the flow of radiative nanofluid above the inclined spinning disk. With the aid of the spectral quasi-linearization method, a simulation of the problem is performed. Asogwa et al. [30] carried out a comparative analysis on water-based Al 2 O 3 nanofluid flow and water-based CuO nanofluid flow due to the stretching Riga plate. Bhati et al. [31] presented the applications of solar energy on the magnetized flow of water-based nanofluid containing MgO and nickel ( Ni ) nanoparticles. Solid nanoparticles in different flow problems under various geometries are studied by different researchers [32,33,34].

In recent years, MHD flow problems have piqued the interest of researchers and scientists due to their vast range of applications in discrete arenas of industries and manufacturing. The MHD effect was first investigated by Alfvén [35]. In 1970, he received the Nobel prize in physics. In industries and engineering, MHD flow problems have a number of fascinating usages such as MHD generators, nuclear reactor designs, pumps, flow meters, liquid metal cooling systems, blood flow measures, MHD-based biomedical sensors, actuators, and solar winds. On the basis of the above-mentioned applications, different scientific researchers and scholars have conducted their research on the MHD flow problems. Eswaramoorthi et al. [36] presented the upshot of MHD water-based nanofluid flow containing the Cu and Ag nanoparticles toward the heated plate. From this evaluation, it is attained that the radiation parameter augments the nanoliquid entropy. Bhatti et al. [37] analyzed the MHD Williamson nanoliquid flow toward the rotating plates along with motile gyrotactic microorganisms surrounded through the porous media and found the increment behavior in mass contour. Khan et al. [38] illustrated the heat source effects in an MHD nanofluid flow with slip conditions. In this examination, they used Cu nanoparticles. Swain et al. [39] offered the importance of the MHD flow nanoliquid through the shrinking sheet. In this inspection, it has been exposed that the nanofluid streaming is boost when the suction/injection constraint is enlarged. Nandi et al. [40] have determined the role of the activation energy and partial slip conditions in the MHD flow of Fe 3 O 4 / Cu / Ag CH 3 OH by using the heated stretchy surface. Waini et al. [25] have established the micropolar flow model by suspending the Al 2 O 3 and Cu nanoparticles in water, and water is used as a base liquid. Furthermore, in this investigation, behavior of magnetic field and viscosity is discussed. Ramzan et al. [41] deliberated the thermal and velocity slip conditions on the mixed convection hybrid nanoliquid flow with a magnetic field toward the stretching surface. In this study, they mix up the Ag and MgO for the formation of the hybrid nanofluid. Ramzan et al. [42] investigated the prevalence of the chemical reaction and magnetic field on the flow of Casson liquid under the inclined flat plate. Joshi et al. [43] analyzed the effect of the viscous dissipation on the MHD flow of Darcy–Forchheimer hybrid nanofluid containing Cu and Ag nanoparticles via stretched surface. Hayat et al. [44] examined the flow of third-grade fluid with the effect of the magnetic field by using the stretching cylinder, and their concluding remarks explained that the higher values of the magnetic field declined the fluid particles’ speed. Hayat et al. [45] have considered the flow of third-grade fluid along with the combined effects of thermal radiation and magnetic field phenomenon toward the permeable stretched surface. In this discussion, they have analyzed that the increment in the Eckert number increases the thermal boundary layer thickness. Sharma and Shaw [46] examined the role of nonlinear thermal radiation in the flow of fluid past an extending surface with magnetic and viscous dissipation effects. Further works on the MHD flow problems are discussed in refs [38,47,48].

Nowadays, flow behavior of the fluids under the rotating disk in fluid mechanics is interesting to investigate. The applications of the flow problems through the rotating disk in industries and engineering areas are rotor–stator system, electrochemical system, manufacturing processes of glass fiber innovation, deposition of the coating on a surface, geophysics, solutal and thermal transport, and different mechanical fields. Therefore, different scientists and researchers show their keen attention in studying the flow problems related to the rotating disks. Nuwairan et al. [49] have determined the radiative Maxwell nanoliquid flow toward the rotating disk with heat generation. They found that the augmentation in heat generation factor led to improve the nanoliquid energy. Alzahrani and Khan [50] used the double rotating disks for the study of Darcy–Forchheimer on the Ree–Eyring nanofluid flow with artificial neural network and entropic behavior. Ayub et al. [51] discussed the effect of Lorentz forces and mass transportation on the 3D radiative cross-nanoliquid flow with the magnetic flux and autocatalysis chemical reaction by using the two rotating disks. In this work, it is predicted that the fluid particle speed is reduced due to the production of the Lorentz forces. Waini et al. [52] analyzed the stability analysis by using a rotating disk on the unsteady flow of hybrid nanofluid and found multiple solutions to their problem. In this examination, it is obtained that the Nusselt number for all solutions is greater when the suction is applied on the surface of the disk. Kumar et al. [53] explained the heat source/sink analysis in a dusty flow of nanofluid toward the revolving disk through the porous medium. In this analysis, they used water as the base liquid and multi-walled carbon nanotubes and single-walled carbon nanotubes (SWCNT) are the nanoparticles. Sun et al. [54] have considered the nonlinear thermal radiation impact over the thin-film Maxwell nanofluid flow with Brownian and thermal diffusivity under the rotating disk. In this inquiry, it is attained that the rotation constraint augmented the nanoliquid Sherwood number. Ramzan et al. [55] analyzed the impacts of mixed convection nanofluid flow toward the revolving disk. In this study, they used Au , silicon dioxide ( SiO 2 ), and Ag as the nanoparticles, and the base liquid is water. Usman et al. [56] studied the Cu and SWCNT nanoparticles on the power-law nanoliquid flow between the two-rotational disks with heat transport phenomena. In this scrutiny, blood is used as a base liquid. Simulation of their problem is obtained by using the shooting method.

In this work, the flow of two-dimensional electrically conducting nanofluid with the effect of a magnetic field toward the spinning disk has been investigated. Nanofluid is created by mixing Al 2 O 3 nanoparticles in water. The heat transport mechanism is simulated by using the role of viscous dissipation and nonlinear thermal radiation. Furthermore, the effects of the radius of Al 2 O 3 nanoparticles and inter-particle spacing on the electrically conducting nanofluid flow are elaborated. Because the Al 2 O 3 nanoparticles have a lot of real-world applications such as transparent ceramics, cosmetic fillers, high-pressure sodium lamps, integrated circuit baseboards, packaging materials, plastic wear-resistant reinforcement, aerospace aircraft wing leading edges, and fluorescent materials. The following questions are to be addressed at the end of this research work:

  • What is the behavior of velocity profiles and skin friction coefficients of the nanofluid for small and large inter-particle spacing?

  • How do the nanofluid skin friction coefficients and velocity profiles behave for a small and large radius of Al 2 O 3 nanoparticles?

  • What is the effect of the Lorentz force on the nanofluid velocity with the applications of the magnetic field?

  • How do the linear and nonlinear thermal radiation phenomena affect the nanofluid temperature profiles and heat transfer rate?

2 Problem formulation

Let us assume the two-dimensional electrically conducting water-based nanofluid containing the Al 2 O 3 nanoparticles over a rotating disk. Normal to the plane of the disk, the strength of magnetic field B 0 is employed. The disk rotates with an angular velocity Ω along z -axis. The rotating disk is placed at z = 0 . For the calculation of heat transmission, the viscous dissipation and nonlinear thermal radiation are deliberated. Furthermore, the effect of suction is discussed. Inside the boundary layer, by using the similarity transformations, the pressure remains constant p r = 0 [57] and the free-stream pressure is p . Along the directions of r , φ , and z -axes, the velocity components are symbolized by u , v , and w . The surface temperature is T w , and the ambient temperature of the nanofluid is T . Figure 1 demonstrates the geometrical representation of the flow problem.

Figure 1 
               Geometry of the flow problem.
Figure 1

Geometry of the flow problem.

The leading equations for the present model on the base of the above-mentioned flow assumptions are as follows [5861]:

(1) u r + u r + w z = 0 ,

(2) u u r + w u z v 2 r + p r = ν nf 2 u r 2 u r 2 + 2 u z 2 + 1 r u r σ nf ρ nf B 0 2 u ,

(3) u v r + w v z + u v r + p r = ν nf 2 v r 2 v r 2 + 2 v z 2 + 1 r v r σ nf ρ nf B 0 2 v ,

(4) u w r + w w z + p r = ν nf 2 w r 2 + 2 w z 2 + 1 r w r ,

(5) u T r + w T z = k nf ( ρ C p ) nf 2 T r 2 + 2 T z 2 + 1 r T r + 1 ( ρ C p ) nf z 16 σ T 3 3 k T z + μ nf ( ρ C p ) nf u z 2 + v z 2 .

The boundary conditions are as follows:

(6) u = 0 , v = r Ω , w = w 0 , T = T w when z = 0 , u 0 , v 0 , T T , as z , ,

where ν nf is the nanoliquid kinematics viscosity, p is the pressure, ρ nf is the nanoliquid density, the electrical conductivity of the nanoliquid is designated by σ nf , μ nf is the dynamic viscosity of the nanoliquid, B 0 is the magnetic field strength, k nf is the thermal conductivity of the nanoliquid, specific heat of the nanoliquid is denoted by ( C p ) nf , T is the temperature, w 0 is the suction/injection, Stefan–Boltzmann constant is denoted by σ , and k represents the absorption coefficient.

2.1 Suggested thermophysical properties of nanofluid

According to the study of Graham [62] and Gosukonda et al. [63], the viscosity model is deliberated as:

(7) μ nf μ f = 1 + 2.5 Δ + 4.5 1 h R p 2 + h R p 1 + h R p 2 ,

where h represents the inter-particle spacing, R p indicates the radius of nanoparticle, and Δ represents the solid volume fraction. Furthermore, thermophysical properties of the Al 2 O 3 nanofluid are discussed as:

(8) ρ nf = ( 1 Δ ) ρ f + Δ ρ Al 2 O 3 .

In 1998, first, the density was discussed by Pak and Cho [64]. After this, a lot of research and scientists [6567] have discussed the behavior of the density in different flow problems.

The heat capacitance was first offered by Pak and Cho [64] and deliberated as:

(9) ( ρ C p ) nf = ( 1 Δ ) ( ρ C p ) f + Δ ( ρ C p ) Al 2 O 3 ,

where ( C p ) f is the specific heat of water.

In 1962, Hamilton and Crosser [68] initially discussed the thermal conductivity of the nanofluid and discussed as:

(10) k nf k f = k Al 2 O 3 + 2 k f 2 Δ ( k f k Al 2 O 3 ) k Al 2 O 3 + 2 k f + Δ ( k f k Al 2 O 3 ) ,

where k f is the thermal conductivity of water.

The electrical conductivity was initially presented by Cruz et al. [69] and is defined as:

(11) σ nf σ f = σ Al 2 O 3 + 2 σ f 2 Δ ( σ f σ Al 2 O 3 ) σ Al 2 O 3 + 2 σ f + Δ ( σ f σ Al 2 O 3 ) ,

where σ f is the electrical conductivity of water.

The physical characteristics of nanoparticles and base fluid are depicted in Table 1.

Table 1

Thermophysical characteristics of the base liquid and nanoparticles

Property Water Al 2 O 3
C p ( J/kg K ) 4,179 880
ρ ( kg/m 3 ) 997.1 3,890
k ( W/m K ) 0.613 35
σ ( S/m ) 5.5 × 10−6 3.5 × 107

In the present analysis, the similarity transformations are discussed [5861]:

(12) u = r Ω f ( ξ ) , v = r Ω g ( ξ ) , w = 2 Ω ν f f ( ξ ) , p = p + 2 Ω μ f P ( ξ ) , θ ( ξ ) = T T T w T , ξ = 2 Ω ν f 1 2 z .

By applying the above similarity transformations in equation (12), equations (2)–(5) are converted into following form:

(13) 2 μ nf μ f ρ f ρ nf f + 2 f f f 2 + g 2 σ nf σ f ρ f ρ nf M f = 0 ,

(14) 2 μ nf μ f ρ f ρ nf g + 2 f g 2 f g σ nf σ f ρ f ρ nf M g = 0 ,

(15) ( ρ C p ) f ( ρ C p ) nf k nf k f + Rd ( 1 + ( θ w 1 ) θ ) 3 θ + Pr f θ + ( ρ C p ) f ( ρ C p ) nf μ nf μ f Ec ( f 2 + g 2 ) = 0 ,

and transformed boundary conditions:

(16) f ( ξ ) = f w , f ( ξ ) = 0 , g ( ξ ) = 1 , θ ( ξ ) = 1 when ξ = 0 , f ( ξ ) 0 , g ( ξ ) 0 , θ ( ξ ) 0 when ζ = .

The leading dimensionless parameters from the present investigation are discussed here. The similarity variable is ξ , the magnetic field parameter is represented by M = B 0 2 σ f ρ f Ω , the radiation parameter is represented by Rd = 16 σ T 3 3 k f k , the Prandtl number is Pr = ( μ C p ) f k f , the Eckert number is signified by Ec = r 2 Ω 2 ( C p ) f ( T w T ) , f w = w 0 2 Ω ν f is the section/injection parameter in which f w < 0 signifies the injection, while f w > 0 signifies the suction, and temperature ratio parameter is θ w = T w T .

Some physical quantities are described as:

(17) C f = 2 μ nf ρ f 1 ( r Ω ) 2 u z z = 0 , C g = 2 μ nf ρ f 1 ( r Ω ) 2 v z z = 0 , Nu = r k f ( T w T ) q r k nf T z z = 0 .

Now, the dimensionless forms of C fr , C gr , and Nu r are as follows:

(18) C fr = ( Re z ) 1 2 C f = 1 + 2.5 Δ + 4.5 1 h R p 2 + h R p 1 + h R p 2 f ( 0 ) , C gr = ( Re z ) 1 2 C g = 1 + 2.5 Δ + 4.5 1 h R p 2 + h R p 1 + h R p 2 g ( 0 ) , Nu r = Nu ( Re z ) 1 2 = k nf k f + Rd ( 1 + ( θ w 1 ) θ ) 3 θ ( 0 ) ,

where Re z = Ω r 2 ν f is the Reynolds number.

3 Homotopy analysis method solution

The initial guesses and linear operator for the present case are as follows:

(19) f 0 ( ξ ) = f w e ξ , g 0 ( ξ ) = e ξ , θ 0 ( ξ ) = e ξ .

(20) L f = f f , L g = g g , L θ = θ θ .

As such,

(21) L f [ Ψ 1 + Ψ 2 e ξ ( ξ ) + Ψ 3 e ξ ] = 0 , L g [ Ψ 4 e ξ + Ψ 5 e ξ ] = 0 , L θ [ Ψ 6 e ξ + Ψ 7 e ξ ] = 0 ,

and Ψ i ( i = 1 , 2 , 3 , , 7 ) are the arbitrary constants.

3.1 Zeroth-order deformation problems

The zero-order deformation problems are discussed as:

(22) ( 1 ) L f [ f ( ξ ; ) f 0 ( ξ ) ] = q h f N f [ f ( ξ ; ) , g ( ξ ; ) ] ,

(23) ( 1 ) L g [ g ( ξ ; ) g 0 ( ξ ) ] = q h g N g [ f ( ξ ; ) , g ( ξ ; ) ] ,

(24) ( 1 ) L θ [ θ ( ξ ; ) θ 0 ( ξ ) ] = q h θ N θ [ f ( ξ ; ) , g ( ξ ; ) , θ ( ξ ; ) ] .

Here, the embedding parameter is , and the nonzero auxiliary parameters are h f , h g , and h θ . N f , N g , and N θ are the nonlinear operators that are discussed as:

(25) N f [ f ( ξ ; ) , g ( ξ ; ) ] = 2 μ nf μ f ρ f ρ nf 3 f ( ξ ; ) ξ 3 + 2 f ( ξ ; ) 2 f ( ξ ; ) ξ 2 f ( ξ ; ) ξ 2 + g ( ξ ; ) 2 σ nf σ f ρ f ρ nf M f ( ξ ; ) ξ ,

(26) N g [ f ( ξ ; ) , g ( ξ ; ) ] = 2 μ nf μ f ρ f ρ nf 2 g ( ξ ; ) ξ 2 + 2 f ( ξ ; ) g ( ξ ; ) ξ 2 g ( ξ ; ) f ( ξ ; ) ξ σ nf σ f ρ f ρ nf M g ( ξ ; ) ,

(27) N θ [ f ( ξ ; ) , g ( ξ ; ) , θ ( ξ ; ) ] = ( ρ C p ) f ( ρ C p ) nf k nf k f + Rd ( 1 + ( θ w 1 ) θ ( ξ ; ) ) 3 2 θ ( ξ ; ) ξ 2 + Pr f ( ξ ; ) θ ( ξ ; ) ξ ( ρ C p ) f ( ρ C p ) nf μ nf μ f Ec 2 f ( ξ ; ) ξ 2 2 + g ( ξ ; ) ξ 2 ,

(28) f ( 0 ; ) = f w , f ( 0 ; ) = 0 , and f ( ; ) = 0 ,

(29) g ( 0 ; ) = 1 , and g ( ; ) = 0 ,

(30) θ ( 0 ; ) = 1 , and θ ( ; ) = 0 .

For = 0 and = 1 , then equations (22)–(24) become as:

(31) = 0 f ( ξ ; 0 ) = f 0 ( ξ ) and = 1 f ( ξ ; 1 ) = f ( ξ ) ,

(32) = 0 g ( ξ ; 0 ) = g 0 ( ξ ) and = 1 g ( ξ ; 1 ) = g ( ξ ) ,

(33) = 0 θ ( ξ ; 0 ) = θ 0 ( ξ ) and = 1 θ ( ξ ; 1 ) = θ ( ξ ) .

According to Taylor’s series expansion, we have

(34) f ( ξ ; ) = f 0 ( ξ ) + m = 1 f m ( ξ ) m , f m ( ξ ) = 1 m ! m f ( ξ ; ) ξ m | = 0 ,

(35) g ( ξ ; ) = g 0 ( ξ ) + m = 1 g m ( ξ ) m , g m ( ξ ) = 1 m ! m g ( ξ ; ) ξ m = 0 ,

(36) θ ( ξ ; ) = θ 0 ( ξ ) + m = 1 θ m ( ξ ) m , θ m ( ξ ) = 1 m ! m θ ( ξ ; ) ξ m = 0 .

By putting = 1 in equations (34)–(36), the convergence of the series is accomplished as:

(37) f ( ξ ) = f 0 ( ξ ) + m = 1 f m ( ξ ) ,

(38) g ( ξ ) = g 0 ( ξ ) + m = 1 g m ( ξ ) ,

(39) θ ( ξ ) = θ 0 ( ξ ) + m = 1 θ m ( ξ ) .

3.2 mth-order deformation problems

The mth-order form of the problem is

(40) L f [ f m ( ξ ) η m f m 1 ( ξ ) ] = h f R m f m ( ξ ) ,

(41) L g [ g m ( ξ ) η m g m 1 ( ξ ) ] = h g R m g m ( ξ ) ,

(42) L θ [ θ m ( ξ ) η m θ m 1 ( ξ ) ] = h θ R m θ ( ξ ) ,

(43) f m ( 0 ) = 0 , f m ( 0 ) = 0 , f m ( ) = 0 ,

(44) g m ( 0 ) = 0 , g m ( ) = 0 ,

(45) θ m ( 0 ) = 0 , θ m ( ) = 0 .

R m f m ( ξ ) , R m g m ( ξ ) , and R m θ m ( ξ ) are defined as:

(46) R m f ( ξ ) = 2 μ nf μ f ρ f ρ nf f m 1 + 2 k = 0 m 1 f m 1 k f k k = 0 m 1 f m 1 k f k + k = 0 m 1 g m 1 k g k σ n f σ f ρ f ρ n f M f m 1 ,

(47) R m g ( ξ ) = 2 μ n f μ f ρ f ρ n f g m 1 + 2 k = 0 m 1 f m 1 k g k k = 0 m 1 f m 1 k g k σ n f σ f ρ f ρ n f M g m 1 ,

(48) R m θ ( ξ ) = ( ρ C p ) f ( ρ C p ) nf k nf k f + Rd ( 1 + ( θ w 1 ) θ m 1 ) 3 θ m 1 + Pr 1 = 0 k f m 1 k θ k 1 ( ρ C p ) f ( ρ C p ) nf μ nf μ f Ec × 1 = 0 k f m 1 k f k 1 f 2 + 1 = 0 k g m 1 k g k 1 = 0 ,

(49) η m = 0 , m 1 1 , m > 1 .

With the assistance of particular solution, the general solution of the present enquiry is achieved:

(50) f m ( ξ ) = f m ( ξ ) + Ψ 1 + Ψ 2 exp ( ξ ) + Ψ 3 exp ( ξ ) ,

(51) g m ( ξ ) = g m ( ξ ) + Ψ 3 exp ( ξ ) + Ψ 4 exp ( ξ ) ,

(52) θ m ( ξ ) = θ m ( ξ ) + Ψ 6 exp ( ξ ) + Ψ 7 exp ( ξ ) .

4 Results and discussion

This segment explains that the physical significance of the MHD flow of water-based nanofluid containing Al 2 O 3 nanoparticles over a rotating disk has been deliberated. The effect of inter-particle spacing and radius of nanoparticle on the flow behavior are analyzed. The proposed nanofluid model has been solved by using the homotopy analysis technique. The velocities and temperature profiles versus discrete flow parameters are computed for large and small inter-particle spacing (say h = 1/2 and h = 10) and for small and large (say R p = 3/2 and R p = 5/2) radius of Al 2 O 3 nanoparticles. Skin friction and Nusselt number versus discrete flow parameters are also calculated and are shown with the help of tables. For inter-particle spacing and radius of Al 2 O 3 nanoparticles, the results of Δ and M on the skin friction coefficient Re z C fr are demonstrated in Table 2. It is obtained that, for h = 1/2 and h = 10, Re z C fr of the nanofluid is enhanced due to the increasing M . Moreover, Re z C fr of the nanofluid is higher for small and large radius of Al 2 O 3 nanoparticles with the increase in M . Moreover, with the intensification of the magnetic field, the Lorentz force enhances, which opposes the motion of the fluid flow. That is why Re z C fr is an upsurge. Furthermore, it is noticed that the increment in Δ increases Re z C fr of the nanofluid for small and larger inter-particle spacing and radius of Al 2 O 3 nanoparticles. Table 3 represents the variation of the skin friction coefficient Re z C gr of the nanofluid for small and large inter-particle spacing and radius of Al 2 O 3 nanoparticles against M and Δ . Table 3 explains that, for small and large inter-particle spacing and for small and large radius of Al 2 O 3 nanoparticles, Re z C gr of the nanofluid is amplified versus increasing values of M . Moreover, it is noticed that Re z C gr of the nanoliquid is declined due to augmenting estimates of Δ for small and large inter-particle spacing and radius of Al 2 O 3 nanoparticles. The effect of Rd , Ec , and Δ on the nanofluid Nusselt number Nu r Re z for the case of θ w = 3/2 and θ w = 1 is shown in Table 4. Table 4 explores that Nu r Re z of the nanofluid for the case of θ w = 3/2 and θ w = 1 increases when Rd , Ec , and Δ are enhanced. Kumar et al. [70] obtained that the thermal boundary layer thickness enhances when the temperature ratio parameter ( θ w ) increases, which consequently enhances the nanofluid temperature and heat rate transfer. Here, in the present analysis, two different linear ( θ w = 1 ) and nonlinear thermal radiation ( θ w > 1 ) cases are discussed.

Table 2

Effects of M and Δ on Re z C fr for h = 1/2, h = 10, R p = 3/2, and R p = 5/2

M Δ Re z C fr
h = 1 / 2 h = 10 R p = 3/2 R p = 5/2
0.1 0.273832 0.273829 0.024810 0.034812
0.2 0.273833 0.273831 0.024811 0.034816
0.3 0.272834 0.273834 0.024812 0.034818
0.4 0.273836 0.273836 0.024813 0.034819
0.01 0.253831 0.263532 0.283833 0.293832
0.02 0.252962 0.264668 0.282969 0.292968
0.03 0.252393 0.265793 0.282394 0.292393
0.04 0.252095 0.266794 0.282096 0.292096
Table 3

Effects of M and Δ on Re z C gr for h = 1/2, h = 10, R p = 3/2, and R p = 5/2

M Δ Re z C gr
h = 1 / 2 h = 10 R p = 3/2 R p = 5/2
0.1 2.891303 0.762811 0.819206 0.919206
0.2 2.900508 0.772016 0.824415 0.920415
0.3 2.919713 0.781221 0.835362 0.922624
0.4 2.938918 0.690426 0.840834 0.923834
0.01 3.110370 0.981878 1.226369 1.718265
0.02 3.100556 0.978780 1.222499 1.712844
0.03 3.094028 0.976719 1.219925 1.709237
0.04 3.090648 0.975652 1.218593 1.707370
Table 4

Effects of Rd , Ec , and Δ on Nu r Re z for θ w = 3/2 and θ w = 1

Rd Ec Δ Nu r Re z Nu r Re z
θ w = 3/2 θ w = 1
0.1 1.583450 1.509312
0.2 2.155726 2.983882
0.3 3.716828 3.423517
0.4 4.266756 4.828410
0.1 2.624424 3.218437
0.2 3.716828 3.423517
0.3 4.809231 3.628597
0.4 4.901634 3.833677
0.01 1.703150 1.069990
0.02 1.819742 1.247410
0.03 1.951036 1.447200
0.04 1.998451 1.671524

From this examination, it is perceived that the heat rate transfer increases more for the case of nonlinear thermal radiation by increasing the temperature ratio parameter ( θ w > 1 ) as compared to the case of linear thermal radiation. The flow chart of the present work is discussed in Figure 2. Figures 37 determine the fluctuation of f ( ξ ) against different flow constraints such as suction f w , magnetic parameter M , and radius of nanoparticles R p for both small and large inter-particle spacing h and nanoparticle radius R p cases. Figure 3 explains the behavior of suction parameter f w on f ( ξ ) of the nanofluid for both h = 1/2 and h = 10. In this figure, it is shown that f ( ξ ) amplifies for larger values of the suction parameter f w for both h = 1/2 and h = 10. The effect of f w on f ( ξ ) of the nanofluid for small radius of Al 2 O 3 nanoparticles is demonstrated in Figure 4. For both small and large radius of Al 2 O 3 nanoparticles, f ( ξ ) of the nanofluid is enhanced due to the increase in suction parameter f w . Figure 5 determines the fluctuation in f ( ξ ) of the nanofluid for both h = 1/2 and h = 10 against growing values of M . From this scrutiny, it can be determined that the larger values of M diminish f ( ξ ) for both h = 1/2 and h = 10. Figure 6 displays the effect of M on f ( ξ ) of the nanofluid for small and large radius of Al 2 O 3 nanoparticles. This figure explains that f ( ξ ) of the nanofluid for small radius of Al 2 O 3 nanoparticles decreases when M rises. In this examination, it is inspected that by rising the magnetic field parameter M , the frictional forces between the fluid particles are produced. Also, the rate of heat transport increases due to the increase in magnetic field parameter. Lorentz force effect is produced due to higher magnetic field. The boundary layer thickness for momentum reduces with the increase in Lorentz force, and thus, the velocity of the fluid decreases. The variation in f ( ξ ) of the nanofluid versus higher values of the nanoparticles radius R p for both h = 1/2 and h = 10 is discussed in Figure 7. For both h = 1/2 and h = 10, f ( ξ ) increases due to the increase in nanoparticle radius R p . The effects of the various flow parameters such as f w , M , and R p on g ( ξ ) of the nanoliquid for both inter-particle spacing h and nanoparticle radius R p cases are analyzed in Figures 812. The impact of suction parameter f w on g ( ξ ) of the nanofluid for both h = 1/2 and h = 10 is scrutinized in Figure 8. This figure displays that g ( ξ ) is higher for both h = 1/2 and h = 10 due to enhancing suction parameter f w . Figure 9 describes the effect of f w on g ( ξ ) of the nanofluid for both small and large radius of Al 2 O 3 nanoparticles. In this graph, it is detected that as the values of the suction parameter f w rise, then g ( ξ ) increases for both small and large radius of Al 2 O 3 nanoparticles. For h = 1/2 and h = 10, variation in g ( ξ ) of the nanoliquid due to the higher values of M is deliberated in Figure 10. From this graph, the decreasing behavior in g ( ξ ) of the nanofluid is observed for h = 1/2 and h = 10 against the expanding values of M . Figure 11 explores the effect of M on g ( ξ ) of the nanofluid for both small and large radius of aluminum oxide Al 2 O 3 nanoparticles. Increment in M declines g ( ξ ) for both small and large radius of Al 2 O 3 nanoparticles. In this examination, it is perceived that by expanding the magnetic field parameter M , the frictional forces between the fluid particles are produced. Also, the heat rate transmission increases due to the increase in magnetic field parameter. The Lorentz force effect is produced due to higher magnetic field. The boundary layer thickness for momentum reduces with the increase in Lorentz force, and thus, the velocity of the fluid decreases. The effect of nanoparticle radius R p on g ( ξ ) of the nanofluid for both h = 1/2 and h = 10 is analyzed in Figure 12. g ( ξ ) is greater due to greater values of nanoparticle radius R p for both h = 1/2 and h = 10. Figures 1315 are drawn to determine the effects of distinct flow parameters on the temperature profile θ ( ξ ) of the nanofluid for both θ w = 3/2 and θ w = 1 cases. The impact of the Eckert number on θ ( ξ ) of the nanofluid for both θ w = 3/2 and θ w = 1 is described in Figure 13. The increase in performance in θ ( ξ ) is observed against larger values of the Eckert number Ec for both θ w = 3/2 and θ w = 1. The reason behind this analysis is that by increasing the Eckert number, the electrical energy and mechanical energy are converted into the heat due to the friction and resistance of the fluid. Therefore, the thermal boundary layer thickness and nanofluid temperature increase with the increasing Eckert number. It is perceived that the surface heat of the nanofluid enhances with the increase in the Eckert number. That is why the nanofluid temperature increases. The fluctuation in θ ( ξ ) for both θ w = 3/2 and θ w = 1 due to the growing values of Rd is represented in Figure 14. In this observation, it is noticed that the intensifying values of Rd increase θ ( ξ ) for both θ w = 3/2 and θ w = 1. The radiation parameter is deliberated as the relative consequence of the conduction heat transport to the radiation transport. It is noticed that the boundary layer thickness enhances due to the increase in the radiation parameter. Thus, the molecular movement or energy level between the particles of the fluid is higher. Therefore, temperature profile of the fluid is amplifying due to the increase in radiation parameter. The effect of nanoparticle radius R p on θ ( ξ ) for both θ w = 3/2 and θ w = 1 is investigated in Figure 15. This figure explores that θ ( ξ ) is greater when the nanoparticle radius R p is higher for both θ w = 3/2 and θ w = 1.

Figure 2 
               Flow chart.
Figure 2

Flow chart.

Figure 3 
               Effect of 
                     
                        
                        
                           
                              
                                 f
                              
                              
                                 w
                              
                           
                        
                        {f}_{\text{w}}
                     
                   on 
                     
                        
                        
                           
                              f
                              ′
                           
                           
                              
                                 (
                                 
                                    ξ
                                 
                                 )
                              
                           
                        
                        f^{\prime} (\xi )
                     
                   when 
                     
                        
                        
                           h
                        
                        h
                     
                   = 10 and 
                     
                        
                        
                           h
                        
                        h
                     
                   = 1/2.
Figure 3

Effect of f w on f ( ξ ) when h = 10 and h = 1/2.

Figure 4 
               Effect of 
                     
                        
                        
                           
                              
                                 f
                              
                              
                                 w
                              
                           
                        
                        {f}_{\text{w}}
                     
                   on 
                     
                        
                        
                           
                              f
                              ′
                           
                           
                              
                                 (
                                 
                                    ξ
                                 
                                 )
                              
                           
                        
                        f^{\prime} (\xi )
                     
                   when 
                     
                        
                        
                           
                              
                                 R
                              
                              
                                 p
                              
                           
                        
                        {R}_{\text{p}}
                     
                   = 5/2 and 
                     
                        
                        
                           
                              
                                 R
                              
                              
                                 p
                              
                           
                        
                        {R}_{\text{p}}
                     
                   = 3/2.
Figure 4

Effect of f w on f ( ξ ) when R p = 5/2 and R p = 3/2.

Figure 5 
               Effect of 
                     
                        
                        
                           M
                        
                        M
                     
                   on 
                     
                        
                        
                           
                              f
                              ′
                           
                           
                              
                                 (
                                 
                                    ξ
                                 
                                 )
                              
                           
                        
                        f^{\prime} (\xi )
                     
                   when 
                     
                        
                        
                           h
                        
                        h
                     
                   = 10 and 
                     
                        
                        
                           h
                        
                        h
                     
                   = 1/2.
Figure 5

Effect of M on f ( ξ ) when h = 10 and h = 1/2.

Figure 6 
               Effect of 
                     
                        
                        
                           M
                        
                        M
                     
                   on 
                     
                        
                        
                           
                              f
                              ′
                           
                           
                              
                                 (
                                 
                                    ξ
                                 
                                 )
                              
                           
                        
                        f^{\prime} (\xi )
                     
                   when 
                     
                        
                        
                           
                              
                                 R
                              
                              
                                 p
                              
                           
                        
                        {R}_{\text{p}}
                     
                   = 5/2 and 
                     
                        
                        
                           
                              
                                 R
                              
                              
                                 p
                              
                           
                        
                        {R}_{\text{p}}
                     
                   = 3/2.
Figure 6

Effect of M on f ( ξ ) when R p = 5/2 and R p = 3/2.

Figure 7 
               Effect of 
                     
                        
                        
                           
                              
                                 R
                              
                              
                                 p
                              
                           
                        
                        {R}_{\text{p}}
                     
                   on 
                     
                        
                        
                           
                              f
                              ′
                           
                           
                              
                                 (
                                 
                                    ξ
                                 
                                 )
                              
                           
                        
                        f^{\prime} (\xi )
                     
                   when 
                     
                        
                        
                           h
                        
                        h
                     
                   = 10 and 
                     
                        
                        
                           h
                        
                        h
                     
                   = 1/2.
Figure 7

Effect of R p on f ( ξ ) when h = 10 and h = 1/2.

Figure 8 
               Effect of 
                     
                        
                        
                           
                              
                                 f
                              
                              
                                 w
                              
                           
                        
                        {f}_{\text{w}}
                     
                   on 
                     
                        
                        
                           g
                           (
                           ξ
                           )
                        
                        g(\xi )
                     
                   when 
                     
                        
                        
                           h
                        
                        h
                     
                   = 10 and 
                     
                        
                        
                           h
                        
                        h
                     
                   = 1/2.
Figure 8

Effect of f w on g ( ξ ) when h = 10 and h = 1/2.

Figure 9 
               Effect of 
                     
                        
                        
                           
                              
                                 f
                              
                              
                                 w
                              
                           
                        
                        {f}_{\text{w}}
                     
                   on 
                     
                        
                        
                           g
                           (
                           ξ
                           )
                        
                        g(\xi )
                     
                   when 
                     
                        
                        
                           
                              
                                 R
                              
                              
                                 p
                              
                           
                        
                        {R}_{\text{p}}
                     
                   = 5/2 and 
                     
                        
                        
                           
                              
                                 R
                              
                              
                                 p
                              
                           
                        
                        {R}_{\text{p}}
                     
                   = 3/2.
Figure 9

Effect of f w on g ( ξ ) when R p = 5/2 and R p = 3/2.

Figure 10 
               Effect of 
                     
                        
                        
                           M
                        
                        M
                     
                   on 
                     
                        
                        
                           g
                           (
                           ξ
                           )
                        
                        g(\xi )
                     
                   when 
                     
                        
                        
                           h
                        
                        h
                     
                   = 10 and 
                     
                        
                        
                           h
                        
                        h
                     
                   = 1/2.
Figure 10

Effect of M on g ( ξ ) when h = 10 and h = 1/2.

Figure 11 
               Effect of 
                     
                        
                        
                           M
                        
                        M
                     
                   on 
                     
                        
                        
                           g
                           (
                           ξ
                           )
                        
                        g(\xi )
                     
                   when 
                     
                        
                        
                           
                              
                                 R
                              
                              
                                 p
                              
                           
                        
                        {R}_{\text{p}}
                     
                   = 5/2 and 
                     
                        
                        
                           
                              
                                 R
                              
                              
                                 p
                              
                           
                        
                        {R}_{\text{p}}
                     
                   = 3/2.
Figure 11

Effect of M on g ( ξ ) when R p = 5/2 and R p = 3/2.

Figure 12 
               Effect of 
                     
                        
                        
                           
                              
                                 R
                              
                              
                                 p
                              
                           
                        
                        {R}_{\text{p}}
                     
                   on 
                     
                        
                        
                           g
                           (
                           ξ
                           )
                        
                        g(\xi )
                     
                   when 
                     
                        
                        
                           h
                        
                        h
                     
                   = 10 and 
                     
                        
                        
                           h
                        
                        h
                     
                   = 1/2.
Figure 12

Effect of R p on g ( ξ ) when h = 10 and h = 1/2.

Figure 13 
               Effect of 
                     
                        
                        
                           Ec
                        
                        \text{Ec}
                     
                   on 
                     
                        
                        
                           θ
                           (
                           ξ
                           )
                        
                        \theta (\xi )
                     
                   when 
                     
                        
                        
                           
                              
                                 θ
                              
                              
                                 w
                              
                           
                        
                        {\theta }_{\text{w}}
                     
                   = 1 and 
                     
                        
                        
                           
                              
                                 θ
                              
                              
                                 w
                              
                           
                        
                        {\theta }_{\text{w}}
                     
                   = 3/2.
Figure 13

Effect of Ec on θ ( ξ ) when θ w = 1 and θ w = 3/2.

Figure 14 
               Effect of 
                     
                        
                        
                           Rd
                        
                        \text{Rd}
                     
                   on 
                     
                        
                        
                           θ
                           (
                           ξ
                           )
                        
                        \theta (\xi )
                     
                   when 
                     
                        
                        
                           
                              
                                 θ
                              
                              
                                 w
                              
                           
                        
                        {\theta }_{\text{w}}
                     
                   = 1 and 
                     
                        
                        
                           
                              
                                 θ
                              
                              
                                 w
                              
                           
                        
                        {\theta }_{\text{w}}
                     
                   = 3/2.
Figure 14

Effect of Rd on θ ( ξ ) when θ w = 1 and θ w = 3/2.

Figure 15 
               Effect of 
                     
                        
                        
                           
                              
                                 R
                              
                              
                                 p
                              
                           
                        
                        {R}_{\text{p}}
                     
                   on 
                     
                        
                        
                           θ
                           (
                           ξ
                           )
                        
                        \theta (\xi )
                     
                   when 
                     
                        
                        
                           
                              
                                 θ
                              
                              
                                 w
                              
                           
                        
                        {\theta }_{\text{w}}
                     
                   = 1 and 
                     
                        
                        
                           
                              
                                 θ
                              
                              
                                 w
                              
                           
                        
                        {\theta }_{\text{w}}
                     
                   = 3/2.
Figure 15

Effect of R p on θ ( ξ ) when θ w = 1 and θ w = 3/2.

5 Conclusion

In this work, an MHD flow of nanofluid containing Al 2 O 3 nanoparticles has been considered over a rotating disk. The flow behavior is affected by the radius of nanoparticle and inter-particle spacing. For the investigation of heat transport, the role of viscous dissipation and nonlinear thermal radiation is incorporated. Suction effect is also deliberated in the present analysis. The major results of the present work are pointed as:

  1. The enhancement in Re z C fr is noted with the increase in magnetic field parameter due to lower or higher inter-particle spacing.

  2. For the case of lower or higher radius of Al 2 O 3 nanoparticles, Re z C fr enhances due to the augmentation of nanoparticle volume fraction. Also, for lower inter-particle spacing, Re z C fr reduces but for higher inter-particle spacing, Re z C fr increases due to higher nanoparticle volume fraction.

  3. When the radius of Al 2 O 3 nanoparticles is small or larger, Re z C gr of the nanoliquid is augmented due to higher magnetic parameter. Furthermore, it is determined that Re z C gr is larger for the case of small or larger inter-particle spacing against the greater magnetic parameter.

  4. It is witnessed that Nu r Re z enhances due to the higher radiation parameter, Eckert number, and nanoparticle volume fraction for both linear and nonlinear thermal radiation cases.

  5. In case of lower or higher inter-particle spacing, f ( ξ ) is increased for suction parameter, whereas f ( ξ ) is decreased for magnetic field parameter. Furthermore, it is examined that f ( ξ ) is higher for suction parameter, whereas f ( ξ ) is lower against magnetic field parameter for the case of small or larger radius of nanoparticles.

  6. For the case of small or larger inter-particle spacing, increment in suction parameter led to enhance g ( ξ ) while diminishes against magnetic field parameter. Furthermore, for both small and larger radius of nanoparticles case, g ( ξ ) is augmented due to the increase in suction parameter, while opposite trend is observed against magnetic field parameter.

  7. f ( ξ ) and g ( ξ ) are augmented due to the higher nanoparticle’s radius for the case of lower or higher inter-particle spacing.

  8. θ ( ξ ) shows increasing behavior versus Eckert number, radiation parameter, and nanoparticle radius for both linear and nonlinear thermal radiation.

  1. Funding information: This research project is supported by Thailand Science Research and Innovation (TSRI) Basic Research Fund: Fiscal year 2023 under project number FRB660073/0164. The first author appreciates the support provided by Petchra Pra Jom Klao Ph.D. Research Scholarship (Grant No. 14/2562 and Grant No. 25/2563).

  2. Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Conflict of interest: The authors state no conflict of interest.

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Received: 2022-08-06
Revised: 2022-11-14
Accepted: 2022-11-28
Published Online: 2023-01-30

© 2023 the author(s), published by De Gruyter

This work is licensed under the Creative Commons Attribution 4.0 International License.

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