EXPERIMENTAL AND NUMERICAL ANALYSIS OF FORCED CONVECTION IN A TWISTED TUBE
作者: Suvanjan Bhattacharyya Ali Cemal Benim Himadri Chattopadhyay Arnab Banerjee
刊名: Thermal Science, 2019, Vol.23 (Supplement 4/2019), pp.S1043-S1052
来源数据库: Society for Thermal Engineers of Serbia
DOI: https://doi.org/10.2298/TSCI19S4043B
关键词: Turbulent forced convectionTwisted tubeSwirl flowHeat Transfer Enhancement
原始语种摘要: In the present paper, along with experimental study, CFD analysis of forced convection in a twisted tube is performed, using the transition SST model which can predict the change of flow regime from laminar through transition to turbulent. The differential governing equations are discretized by the finite volume method. The investigations are conducted for Reynolds numbers ranging from 100 to 50000 covering laminar, transitional and turbulent regimes, and for three length and three pitch ratios. The predictions are observed to show a good agreement with the measurements and published correlations of other authors. The analysis indicates that the large length ratio and small pitch ratio yields a higher heat transfer rate with relatively low performance penalty. The transition from laminar...
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关键词翻译
关键词翻译
  • convection 对流
  • laminar 层聊
  • transition 转移
  • turbulent 紊聊
  • forced 被迫
  • Transfer 转运牌汽车
  • pitch 俯仰
  • agreement 协议
  • Reynolds 雷诺
  • regime 状况