EFFECT OF COOLED BOUNDARY ON THE TURBULENT STRUCTURE

作     者：Li Guo xiang, Mao Hua yong, Li Na School of Energy and Power Engineering, Shandong University, Jinan 250061, China, Li Guo xiang, Mao Hua yong, Li Na School of Energy and Power Engineering, Shandong University, Jinan 250061, China,

作者机构：School of Energy and Power Engineering Shandong University Jinan 250061 China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2003年第15卷第5期

页      面：54-59页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：ProjectsupportedbytheNaturalScienceFoundationofShandongProvince.(GrantNo:Y2 0 0 2F2 6) 

主　　题：heat exchanger cooling turbulent structure 

摘      要：The flow field in the cooled channel of a heat exchanger was measured usingthe X-type film probes of Hot Wire/Firm Anemotheter, and the turbulent mechanism was discussed. Itis concluded that the airflow is cooled in the flow process, the distribution of the turbulentintensity is relatively convergent near the centcrline and the boundary, the constriction actionproduced due to heat release at the foot of the fins causes u to decrease and w to increase near theroot downstream. It is concluded that the turbulent flow with cooled boundary results from thebalance of production, dissipation and intermittency caused by constriction action.