Buoyancy-assisted flow reversal and convective heat transfer in entrance region of a vertical rectangular duct

Chin Hsiang Cheng, Chun Jen Weng, Win Aung

研究成果: Article同行評審

37 引文 斯高帕斯(Scopus)

摘要

In this study, predictions of buoyancy-assisted flow reversal and convective heat transfer in the entrance region of a vertical rectangular duct are reported for the first time. In line with the current trend toward the use of computationally efficient numerical methods, the present study is based on the use of a three-dimensional parabolic, boundary-layer model and the FLARE approximation. Physical situations investigated include cases with various asymmetric heating conditions over wide ranges of parameters. Analytical solutions for the fully developed flows are also presented, and the criteria for the flow reversal to occur are predicted. Solutions for the developing flow obtained in this study agree closely with the elliptic-model solutions, and precisely approch the fully developed solutions downstream. (C) 2000 Elsevier Science Inc. All rights reserved.

原文English
頁(從 - 到)403-411
頁數9
期刊International Journal of Heat and Fluid Flow
21
發行號4
DOIs
出版狀態Published - 2000 八月

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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