化工学报 ›› 2004, Vol. 55 ›› Issue (1): 32-36.

• 传递现象 • 上一篇    下一篇

水平微翅管内环状流两相强制对流蒸发换热的计算模型

马虎根;蔡祖恢;李美玲   

  1. 上海理工大学动力工程学院,上海 200093
  • 出版日期:2004-01-25 发布日期:2004-01-25

ANALYSIS OF TWO-PHASE ANNULAR FLOW CONVECTIVEEVAPORATION IN HORIZONTAL MICROFIN-TUBE

MA Hugen;CAI Zuhui;LI Meiling   

  • Online:2004-01-25 Published:2004-01-25

摘要: 对水平微翅管内的环状流流动和换热特性进行了分析.考虑微翅管内环状流液膜中的扰动和二次流的作用,借用粗糙管速度分布和摩擦相似函数建立了水平微翅管内环状流两相强制对流蒸发换热系数的预测模型.理论计算值与实验数据相比较,结果较令人满意.

关键词: 水平微翅管, 环状流, 强制对流蒸发换热

Abstract: The performance of annular flow and heat transfer in horizontal microfin tubes was analyzed. A prediction model was established to calculate two-phase forced convective heat transfer coefficient of annular flow in horizontal microfin tubes, by considering the effect of disturbance and secondary flow in liquid film and using the velocity distribution of rough tube and similarity function. The comparison between calculated value and experimental data showed good agreement with each other.

Key words: 水平微翅管, 环状流, 强制对流蒸发换热