Numerical study of effect of the casing slot on the tip leakage vortex and vortex cavitation of a fuel pump
-
Ting Zhang
,
Huacong Li
Abstract
The purpose of this paper is to suppress the tip leakage vortex and cavitation of fuel pump by using the casing slot. The flow fields of the blades with different casing slots were studied by numerical simulation under the conditions of no cavitation and cavitation respectively. The results show that the loss with leakage vortex cavitation increases by 37 % compared with the condition without cavitation. Under cavitation conditions, the optimal scheme is c6 scheme, and the loss is reduced by 9.3 %. The tip leakage vortex and vortex cavitation can be effectively reduced by casing slot. Under the condition of no cavitation, the tip leakage flow loss can be effectively reduced by the casing slot in a wide range of axial positions. After the casing slot is applied, the shape of the blade tip leakage vortex is significantly changed, the size of the leakage vortex is significantly reduced, and the loss is reduced. Under cavitation conditions, the casing slot can also effectively improve the tip flow field and inhibit leakage vortex cavitation. In a wide range of axial positions, the casing slot can effectively inhibit leakage vortex cavitation.
-
Research ethics: Not applicable.
-
Informed consent: Not applicable.
-
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
-
Use of Large Language Models, AI and Machine Learning Tools: None declared.
-
Conflict of interest: The authors state no conflict of interest.
-
Research funding: This work was sponsored by National Natural Science Foundation of China (No. 51806174).
-
Data availability: The raw data can be obtained on request from the corresponding author.
References
1. You, D, Wang, M, Moin, P, Mittal, R. Vortex dynamics and low-pressure fluctuations in the tip-clearance flow. J Fluid Eng 2007;129:1002–14. https://doi.org/10.1115/1.2746911.Suche in Google Scholar
2. Feng, J, Luo, X, Guo, P, Wu, G. Influence of tip clearance on pressure fluctuations in an axial flow pump. J Mech Sci Technol 2016;30:1603–10. https://doi.org/10.1007/s12206-016-0315-2.Suche in Google Scholar
3. Corsini, A, Perugini, B, Rispoli, F, Sheard, AG, Iain, RK. Investigation on improved blade tip concept for axial flow fan. In: ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASME; 2006.10.1115/GT2006-90592Suche in Google Scholar
4. Cui, B, Chen, D, Wang, C, Zhu, Z, Jin, Y, Jin, Y. Research on performance of centrifugal pump with different-type open impeller. J Therm Sci 2013;22:586–91. https://doi.org/10.1007/s11630-013-0666-2.Suche in Google Scholar
5. Storer, JA, Cumpsty, NA. Tip leakage flow in axial compressors. J Turbomach 1991;113:252–259.10.1115/1.2929095Suche in Google Scholar
6. Zierke, WC, Farrell, KJ, Straka, WA. Measurements of the tip clearance flow for a high Reynolds number axial flow rotor: Part 1 – flow visualization, Part 2 – detailed flow measurements. J Turbomach 1994;117:522–32. https://doi.org/10.1115/1.2836564.Suche in Google Scholar
7. Rinaldo, LM, Wu, H, Tan, D, Katz, J. Three-dimensional structure within the tip leakage vortex of an axial water jet pump. In: Proceeding of the ASME-JSME-KSME 2011 Joint Fluid Engineering Conference. ASME; 2011.Suche in Google Scholar
8. Wu, H, Miorini, RL, Katz, J. Measurements of the tip leakage vortex structures and turbulence in the meridional plane of an axial water-jet pump. Exp Fluids 2010;50:989–1003. https://doi.org/10.1007/s00348-010-0975-0.Suche in Google Scholar
9. Farrell, KJ, Billet, ML. A correlation of leakage vortex cavitation in axial-flow pumps. J Fluid Eng 1994;116:551–7. https://doi.org/10.1115/1.2910312.Suche in Google Scholar
10. Arndt, REA. Cavitation in fluid machinery and hydraulic structures. Annu Rev Fluid Mech 1981;13:228–73. https://doi.org/10.1146/annurev.fl.13.010181.001421.Suche in Google Scholar
11. Murayama, M, Yoshida, Y, Tsujimoto, Y. Unsteady tip leakage vortex cavitation originating from the tip clearance of an oscillating hydrofoil. J Fluid Eng 2006;128:421–9. https://doi.org/10.1115/1.2173290.Suche in Google Scholar
12. Okita, K, Ugajin, H, Matsumoto, Y. Numerical analysis of the influence of the tip clearance flows on the unsteady cavitating flows in a three-dimensional inducer. J Hydrodyn B 2009;21:34–40. https://doi.org/10.1016/s1001-6058(08)60116-x.Suche in Google Scholar
13. Harwood, C, Ducoin, A, Young, YL. Influence of gap flow on the cavitating response of a rectangular hydrofoil. In: Props and Shafting Symposium, Virginia, Beach, Society of Naval Architects and Marine Engineers; 2012.10.5957/PSS-2012-006Suche in Google Scholar
14. Mousmoulis, G, Kassanos, I, Aggidis, G, Anagnostopoulos, I. Numerical simulation of the performance of a centrifugal pump with a semi-open impeller under normal and cavitating conditions. Appl Math Model 2021;89:1814–34. https://doi.org/10.1016/j.apm.2020.08.074.Suche in Google Scholar
15. Cheng, HY, Bai, XR, Long, XP, Ji, B, Peng, X, Farhat, M. Large eddy simulation of the tip-leakage cavitating flow with an insight on how cavitation influences vorticity and turbulence. Appl Math Model 2020;77:788–809. https://doi.org/10.1016/j.apm.2019.08.005.Suche in Google Scholar
16. Dreyer, M. Mind the gap: tip leakage vortex dynamics and cavitation in axial turbines. Lausanne: École Polytechnique Fédérale de Lausanne; 2005.Suche in Google Scholar
© 2025 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Simulation and analysis of the over-expanded flow field in asymmetric nozzles with lateral expansion
- Design optimization of a fluidic thrust vectoring system based on coanda effect using meta-models
- Research on vibration damping of integral squeeze film damper based on fan rotor tester of turbofan
- Influence of conical shaft stiffness on the dynamic characteristics of flexible rotor
- A novel design methodology for preventing dislocation in the Zig-zag shroud
- Numerical study of effect of the casing slot on the tip leakage vortex and vortex cavitation of a fuel pump
- Multi-parameter study on array-jets impingement with crossflow temperature effect
- Exploration of shock-induced flow dynamics and turbulence-driven combustion optimization in advanced cavity configurations of hydrogen fueled scramjet combustors
- A part-load performance analysis method for gas turbines based on the stage by stages model of the power turbine
- Effect of lip-thickness on rectangular nozzle co-flowing subsonic jet
- Numerical analysis of pollutant formation and exhaust emission in a short annular combustor under part load operation
- Analysis of leakage characteristics and structural optimization of two-stage floating ring seal
- Hypersonic boundary layer flow at an axisymmetric stagnation point on a blunt body
- Numerical simulations of a turbulent lifted hydrogen flame in vitiated coflow with flamelet generated manifold approach
- Optimization of labyrinth seal leakage with independently varied tooth parameters using efficient global optimization
- Investigations of modified cooling hole injection angle configurations for improved trench film cooling performance
- Influence of non-axisymmetric endwall profiling under incoming vortex on the corner separation of a diffusion cascade
- Impact of annular ribs in sudden expansion flow conditions to control base pressure
- Effect of preheated swirling multi-annular jets on mixing and flow characteristics in various expanded confinements
Artikel in diesem Heft
- Frontmatter
- Simulation and analysis of the over-expanded flow field in asymmetric nozzles with lateral expansion
- Design optimization of a fluidic thrust vectoring system based on coanda effect using meta-models
- Research on vibration damping of integral squeeze film damper based on fan rotor tester of turbofan
- Influence of conical shaft stiffness on the dynamic characteristics of flexible rotor
- A novel design methodology for preventing dislocation in the Zig-zag shroud
- Numerical study of effect of the casing slot on the tip leakage vortex and vortex cavitation of a fuel pump
- Multi-parameter study on array-jets impingement with crossflow temperature effect
- Exploration of shock-induced flow dynamics and turbulence-driven combustion optimization in advanced cavity configurations of hydrogen fueled scramjet combustors
- A part-load performance analysis method for gas turbines based on the stage by stages model of the power turbine
- Effect of lip-thickness on rectangular nozzle co-flowing subsonic jet
- Numerical analysis of pollutant formation and exhaust emission in a short annular combustor under part load operation
- Analysis of leakage characteristics and structural optimization of two-stage floating ring seal
- Hypersonic boundary layer flow at an axisymmetric stagnation point on a blunt body
- Numerical simulations of a turbulent lifted hydrogen flame in vitiated coflow with flamelet generated manifold approach
- Optimization of labyrinth seal leakage with independently varied tooth parameters using efficient global optimization
- Investigations of modified cooling hole injection angle configurations for improved trench film cooling performance
- Influence of non-axisymmetric endwall profiling under incoming vortex on the corner separation of a diffusion cascade
- Impact of annular ribs in sudden expansion flow conditions to control base pressure
- Effect of preheated swirling multi-annular jets on mixing and flow characteristics in various expanded confinements
