The numerical analysis for the round jet impingement over a circular cylinder has been carried out. The v2f turbulence model is used for the numerical analysis and compared with the two equation turbulence models from the fluid flow and the heat transfer point of view. Further, the numerical results for the heat transfer with original and modified v2f turbulence model are compared with the experimental results. The nozzle is placed orthogonally to the target surface (heated cylindrical surface). The flow is assumed as the steady, incompressible, three-dimensional and turbulent. The spacing between the nozzle exit and the target surface ranges from 4 to 15 times the nozzle diameter. The Reynolds number based on the nozzle diameter ranges from 23,000 to 38,800. From the heat transfer results, the modified v2f turbulence model is better as compared to the other turbulence models. The modified v2f turbulence model has the least error for the numerical Nusselt number at the stagnation point and wall jet region.
Comparison of Various RANS Models for Impinging Round Jet Cooling From a Cylinder
National Institute of Technology,
West Imphal, Manipur 795004, India
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received October 7, 2018; final manuscript received March 15, 2019; published online April 17, 2019. Assoc. Editor: Amy Fleischer.
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Ganatra, K. A., and Singh, D. (April 17, 2019). "Comparison of Various RANS Models for Impinging Round Jet Cooling From a Cylinder." ASME. J. Heat Transfer. June 2019; 141(6): 064503. https://doi.org/10.1115/1.4043304
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