文献类型：期刊文献

中文题名：扭曲管管内传热及流动特性数值模拟

英文题名：Heat Transfer Performance and Flow Resistance of Twisted Tubes in the Tube Side

作者：朱冬生[1,2];郭新超[1];刘庆亮[1]

机构：[1]华南理工大学化学与化工学院传热强化与过程节能教育部重点实验室,广东广州510641;[2]华东理工大学机械与动力工程学院承压系统与安全教育部重点实验室,上海200237

年份：2012

卷号：40

期号：2

起止页码：63

中文期刊名：流体机械

外文期刊名：Fluid Machinery

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

基金：广东省科技计划项目(2008A010700003)

语种：中文

中文关键词：扭曲管;管壳式换热器;数值模拟

外文关键词：twisted tube; tubular heat exchanger; numerical simulation

摘要：扭曲管是应用于制冷行业中新型管壳式换热器的高效换热管,强化了管内传热,壳程不设折流板以降低壳程流阻。本文通过数值模拟研究了扭曲管管内传热及流动特性。通过建立不同规格的扭曲管物理模型,得出扭曲管的扭曲程度S/de越小、截面压扁程度Ai/Bi越大,扭曲管的强化传热性能就越好,但是同时流阻也会增大;反之则相反。
Twisted tubes as a new efficient heat transfer tubes which is used in new tubular heat exchanger of refrigeration industry can enhance the heat transfer in the tube side, and do not have baffle plates in the shell side to reduce the pressure drop. The heat transfer performance and flow resistance of twisted tubes in the tube side is investigated by the means of numerical simulation in this paper. Many different specifications physical models of twisted tubes are established to analyze the performance in the tube side . The results show that the distortion of twisted tube and the squash of cross - section is obvious , the heat transfer performance of twisted tube is better, but the flow resistance will also increase.