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为分析比较不同材质基底上冷却液膜的流动传热特性,提出一种抛物线形波纹基底,并且分析了不同材料物性对这种新的基底上冷却液膜流动传热特性的影响。利用FLUENT软件,对选用不同材料基底时液膜的温度场进行数值模拟;采用选取特征点的方法,得到了各特征点上的速度分布,漩涡强度,熵,雷诺数(Re),流函数,以及焓等物理参数并绘制相应分布图;结合上述数值摸拟和各分布图,对陶瓷、铝和玻璃钢材质上液膜的流动传热特性进行对比分析。结果表明,不同的材料物性对新波纹基底上冷却液膜的流动传热特性有不同程度的影响,在上述3种材料中换热效果最好的为陶瓷。
In order to analyze and compare the heat transfer characteristics of coolant films on different substrates, a parabolic corrugated substrate was proposed and the effect of different materials on the heat transfer characteristics of the coolant film was analyzed. Using FLUENT software to simulate the temperature field of the liquid film when using different material substrates, the velocity distribution, vortex intensity, entropy, Reynolds number (Re), flow function, And the enthalpy of the physical parameters and draw the corresponding distribution map; combined with the numerical simulation and the distribution map, ceramic, aluminum and glass fiber on the liquid film of the heat transfer characteristics of the comparative analysis. The results show that the physical properties of different materials have different degrees of influence on the flow and heat transfer characteristics of the cooling liquid film on the new corrugated substrate. Among the above three materials, the best heat transfer effect is ceramic.