三维方腔内竖直平板混合对流换热的数值研究  

Numerical Study of Mixed Convection Heat Transfer in a Three-Dimensional Enclosure with Vertical Isothermal Plate

作　　者：张翠珍[1] 杨茉[1] 卢枚[1] 王治云[1] 

机构地区：[1]上海理工大学动力工程学院,上海200093

出　　处：《工程热物理学报》2011年第3期480-482,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50576057);上海市重点学科建设项目资助(No.J50501)

摘　　要：本文建立了三维方腔内竖直板混合对流换热的数学模型,探讨Re数、进风口位置、竖直板位置对混合对流换热的影响。结果表明:随Re数增加,竖直板下部的平均Nu_2下降,而总体平均Nu_1增加。随送风口高度增加,竖直板对流换热量增加。在竖直板位置L_1/H=0.5～1.5的范围内,竖直板处于中间位置L_1/H=1.0时,竖直板混合对流换热量最小。Mathematical model of mixed convection in a three-dimensional enclosure with vertical isothermal plate is established.The effects of Re number,different height of air supply inlet,different location of vertical isothermal plate upon mixed convection heat transfer are studied.The results show that average Nu_2will drop and average Nu_1 will rise with increasing the Reynolds number.The heat transfer will aggrandize with increasing the height of air supply inlet.The heat transfer reach minimum when the vertical isothermal plate locates at the center position of enclosure.

关 键 词：方腔 混合对流换热 数值研究 

分 类 号：TK124[动力工程及工程热物理—工程热物理]