水平圆柱绕流的层流膜沸腾传热  

HEAT TRANSFER IN LAMINAL FORCED-CONVECTION FILM-BOILING ON A LEVEL CYLINDER

作　　者：彭仕文[1] 程尚模[1] 

机构地区：[1]华中理工大学

出　　处：《工程热物理学报》1989年第1期43-48,共6页Journal of Engineering Thermophysics

摘　　要：本文研究水平圆柱垂直向上流动的层流膜沸腾传热问题。对于远离临界状态的流体,汽液两相间存在较大的密度差,相应的边界层排移厚度较大,必将对膜外液流产生影响,这个影响反过来作用于汽膜边界层,影响其流动和传热过程。本文用摄动方法对这种影响作了定性的分析,表明边界层排移的结果使传热过程加强了,并使得总传热系数与实验结果更趋于一致。The effects of boundary layer excluding thickness on flows and heat transfer in laminal forced convection film boiling on a level cylinder have been investigated hear by use of perturbation methode, from which the following conclusions can be obtained: for flows far from critical state, the excluding thickness become larger on account of a larger densities difference between liquid and vapor, which enhances the heat transfer in the end. The analysis of this paper are more consistent with the previous experiments.

关 键 词：圆柱 绕流 层流膜 沸腾 传热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]