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Journal of Enhanced Heat Transfer
インパクトファクター: 0.562 5年インパクトファクター: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN 印刷: 1065-5131
ISSN オンライン: 1026-5511

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v8.i5.10
pages 291-304

Numerical Study of Turbulent Flow and Heat Transfer in Micro-Fin Tubes – Part 1, Model Validation

Ranjeet S. Bhatia
Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, USA
Ralph L. Webb
Department of Mechanical Engineering The Pennsylvania State University, University Park, PA 16802, USA
Specialist in enhanced heat transfer and heat exchanger design

要約

Single-phase heat transfer and friction losses were numerically predicted for micro fin tubes using the commercial CFD program, Fluent. Friction losses were predicted for five tube geometries, for which experimental data were available. The predicted friction factor was within +13% to −9% of the experimental values. The heat transfer simulation was done for only one tube geometry with helix angle of 17.5 degrees. The simulation was carried out for 1 < Pr < 4. The Nusselt number was over predicted, ranging from 29% to 55% as the Prandtl number was increased from 1 to 4.