A COMPARATIVE STUDY OF TURBULENCE MODELS FOR CONJUGATE HEAT TRANSFER TO GAS FLOW IN A HEATED MINI-CHANNEL

被引:11
作者
Chen, Yuming [1 ]
Arbeiter, Frederik [1 ]
Schlindwein, Georg [1 ]
机构
[1] Karlsruhe Inst Technol, Inst Neutron Phys & Reactor Technol, D-76344 Eggenstein Leopoldshafen, Germany
关键词
EDDY-VISCOSITY MODEL; TEMPERATURE; INTERMITTENT; PREDICTIONS; BREAKDOWN; VELOCITY;
D O I
10.1080/10407782.2012.638524
中图分类号
O414.1 [热力学];
学科分类号
摘要
Numerical simulations have been carried out for low Reynolds number (Re = 6000-10000) gaseous flows in a heated annular mini-channel using the commercial CFD codes CFX V12.0 and Star-CD V4.10. The results were compared with in-house experiments. Detailed comparisons were made between the low Reynolds number k-epsilon, k-omega-SST, and V2F of Star-CD and CFX in terms of numerical sensitivities and model performance. Particularly, it was found that the inlet turbulence conditions can have a significant impact on the simulation results in the downstream flow for Star-CD low-Re k-epsilon and V2F models. For heat transfer predictions, the Star-CD V2F model provides the best predictions under low Reynolds numbers of about 6,000, while for Reynolds numbers of about 10,000 the k-omega-SST model performs better than others.
引用
收藏
页码:38 / 60
页数:23
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