二维凸肋通道中湍流动量与对流换热协同关系的分析

Analysis of the Synergy Relation of Turbulent Flow and Convection Heat Transfer in a 2-D Passage with Ribs

用数值计算的方法模拟了二维凸肋通道的流场和温度场 ,考察了不同肋高时充分发展湍流流动的热边界层中流体的温度梯度矢量与速度夹角对换热的影响 ,分析了二维加肋通道流的传热强化机理 ,提出了通过改变边界层来控制出纳感协同的方法 。

A numerical investigation of a 2-D flow passage with two rib heights is presented in this study. The calculated results indicate that the angles between temperature gradient and velocity in the heat transfer sub-layer influence heat transfer of the whole turbulent region. The mechanism of heat transfer augmentation on the passage is analyzed, and a new way to vary the layer is presented to control two fields synergy. Thus, the Field-Synergy Theory is extended within the fully-developed turbulent flowing field.