Simulation, experimentation, and collaborative analysis of adjacent heat exchange modules in a vehicular cooling system  

作　　者：Yu-qi HUANG Rui HUANG Xiao-li YU Feng LV 

机构地区：[1]Power Machinery and Vehicular Engineering Institute, Zhejiang University [2]Department of Mechanical and Aerospace Engineering, Monash University-Clayton

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2013年第6期417-426,共10页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project (No. 51206141) supported by the National Natural Science Foundation of China

摘　　要：A cooling system consisting of several heat exchange modules is a necessary part of an automobile, and its performance has a direct effect on a vehicle's energy consumption. Heat exchangers, such as a charged air cooler (CAC), radiator, oil cooler, or condenser have different structures and can be arranged in various orders, and each combination may produce different effects because of interactions among them. In this study, we aimed to explore the principles governing interactions among adjacent heat exchangers in a cooling system, using numerical simulation and experimental technology. 3D models with different combinations were developed, compared, and analyzed comprehensively. A wind tunnel test platform was constructed to validate the computational results. We found that the heat dissipation of the modules was affected slightly by their relative position (the rules basically comply with the field synergy principle), but was independent of the modules' spacing within a certain distance range. The heat dissipation of one module could be effectively improved by restructuring, but with a penalty of higher resistance. However, the negative effect on the downstream module was much less than expected. The results indicated that the intensity of heat transfer depends not only on the average temperature difference between cold and hot mediums, but also on the temperature distribution.A cooling system consisting of several heat exchange modules is a necessary part of an automobile, and its performance has a direct effect on a vehicle＇s energy consumption. Heat exchangers, such as a charged air cooler （CAC）, radiator, oil cooler, or condenser have different structures and can be arranged in various orders, and each combination may produce different effects because of interactions among them. In this study, we aimed to explore the principles governing interactions among adjacent heat exchangers in a cooling system, using numerical simulation and experimental technology. 3D models with different combinations were developed, compared, and analyzed comprehensively. A wind tunnel test platform was constructed to validate the computational results. We found that the heat dissipation of the modules was affected slightly by their relative position （the rules basically comply with the field synergy principle）, but was independent of the modules＇ spacing within a certain distance range. The heat dissipation of one module could be effectively improved by restructuring, but with a penalty of higher resistance. However, the negative effect on the downstream module was much less than expected. The results indicated that the intensity of heat transfer depends not only on the average temperature difference between cold and hot mediums, but also on the temperature distribution.

关 键 词：Collaborative analysis Heat exchangers Field synergy principle Computational fluid dynamics (CFD) Wind tunnel 

分 类 号：U464.138[机械工程—车辆工程]