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扭曲椭圆管内降膜蒸发特性研究
Authors
刘世杰
尹应德
+3 more
朱冬生
林成迪
涂爱民
Publication date
1 January 2019
Publisher
Abstract
高效换热管有利于提高降膜蒸发器的传热性能,通过FLUENT软件对扭曲椭圆管内降膜蒸发过程进行研究,分析了液膜在扭曲椭圆管内的流动以及分布情况。研究结果表明:液膜在扭曲椭圆管内为螺旋流动,因离心力的作用会在垂直于主流方向产生二次流,从而增强对传热边界层的扰动;从壁面到液膜表面,液膜速度及压力都在逐渐增大,速度的变化率在逐渐地减小;相比于圆管,扭曲椭圆管内的液膜流动更为平稳,且液膜厚度的分布因扭矩的存在而具有一定的周期性变化规律;在扭曲椭圆管内,流体速度场与温度场的协同性相对来说比圆管的好,而速度场与压力场的协同性比圆管的差
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Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
See this paper in CORE
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oai:ir.giec.ac.cn:344007/33946
Last time updated on 04/12/2021
Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.giec.ac.cn:344007/33948
Last time updated on 04/12/2021