Abstract
In the present study, the effect of perforated hollow cylinders and twisted tapes on fluid flow and heat transfer behavior of a circular tube is presented for the Reynolds number (Re) range of 6000–40,000. The diametrical ratio (DR) and perforation index (PI) of compound devices are varied to determine the Nusselt number (Nu) and friction factor (f) for the combined perforated hollow cylinder (PHC) and twisted tape (TT) insert. The maximum value of Nusselt number ratio is found to be 3.19 and the minimum value of the friction factor ratio is obtained as 2.24. The PHC–TT combination provides the maximum thermal enhancement factor (TEF) of 2.43 for PI = 8%, and DR = 0.5.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Study of a perforated hollow cylinder and twisted tape inserts as a compound device in a circular tube for heat transfer enhancement
- Pool boiling performance of oxide nanofluid on a downward-facing heating surface
- The CANDLE burnup strategy applied to small modular pressurized water reactor loading with fully ceramic microencapsulated fuel
- Automatic sentiment analysis of public opinion on nuclear energy
- One-dimensional and three-dimensional coupling simulation research of centrifugal cascade hydraulics
- Analysis of the anticipated transient without scram (ATWS) initiated by emergency power mode through the full scope simulator
- Application of radio analytical tracer technique to study the performance of industrial grade ion exchange resin exposed to UV radiations
- Radioactive waste treatment technology: a review
- Positron annihilation lifetime spectroscopy of annealed tungsten
- Simulation of cobalt-60 production in research reactors using OpenMC Monte Carlo code
- Half-space albedo problem for the Anlı-Güngör scattering function
- Calendar of events
Articles in the same Issue
- Frontmatter
- Study of a perforated hollow cylinder and twisted tape inserts as a compound device in a circular tube for heat transfer enhancement
- Pool boiling performance of oxide nanofluid on a downward-facing heating surface
- The CANDLE burnup strategy applied to small modular pressurized water reactor loading with fully ceramic microencapsulated fuel
- Automatic sentiment analysis of public opinion on nuclear energy
- One-dimensional and three-dimensional coupling simulation research of centrifugal cascade hydraulics
- Analysis of the anticipated transient without scram (ATWS) initiated by emergency power mode through the full scope simulator
- Application of radio analytical tracer technique to study the performance of industrial grade ion exchange resin exposed to UV radiations
- Radioactive waste treatment technology: a review
- Positron annihilation lifetime spectroscopy of annealed tungsten
- Simulation of cobalt-60 production in research reactors using OpenMC Monte Carlo code
- Half-space albedo problem for the Anlı-Güngör scattering function
- Calendar of events