Calculation of wall heat transfer in pipeexpansion turbulent flows

W. D. Hsieh, K. C. Chang

研究成果: Article同行評審

31 引文 斯高帕斯(Scopus)

摘要

A new modified low-Reynolds-number k-ε turbulence [Chang, Hsieh and Chen (CHC)] model, which possesses the proper near-wall limiting behaviors and is free of the singular defect occurring near the reattachment point when applied to separated flows, is examined for use in wall heat transfer problems in flow with pipe expansion geometry. Another eight low-Reynolds-number k-ε models, found in open literature, are also examined in this study. Attention is specifically focused on the flow region surrounding the reattachment point. Comparative results show that only the CHC model and the model developed by Abe et al. [Abe, Kondoh and Nagano (AKN model)] can yield satisfactory distributions of the Nusselt number along the wall. However, the CHC model adopted the same model constants as conventionally used for the standard k-ε model. Thus, the CHC model is more universal than the AKN model.

原文English
頁(從 - 到)3813-3822
頁數10
期刊International Journal of Heat and Mass Transfer
39
發行號18
DOIs
出版狀態Published - 1996 十二月

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 機械工業
  • 流體流動和轉移過程

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