非均匀热物理场强迫风冷传热优化设计研究

Research on optimal design of forced air-cooling heat transfer in inhomogeneous thermal field

针对某大功率、高热流密度梯度、非均匀热物理条件的集成模块,基于均温技术进行传热优化设计研究,应用数值仿真和试验测试的研究方法,将初始无热管方案、倒装方式均温热管方案和正装方式均温热管方案进行对比。结果表明,在相同的风速工况下,倒装方式的均温热管方案相对初始无热管方案散热器温升减小10.3~11.0 K,最大降幅达18%,均温效果最大提升32.5%;相对于倒装方式的均温热管方案,正装方式均温热管方案在温升方面可进一步减小6.9~9.4 K,最大降幅达19.3%,均温效果进一步提升83.6%,传热效率非常显著。

Aiming at an integrated module with high power,high heat flux gradient and non-uniform thermophysical conditions,heat transfer optimization design research was conducted based on uniform temperature technology.By using the research methods of numerical simulation and experimental testing,the initial no-heat-pipe scheme and the equal-temperature heat pipe scheme,including the forward and inverted mounting methods,were compared.The results show that:under the same wind speed,compared with the initial radiator without heat pipe solution,the temperature rise of the even-temperature heat pipe solution of the flip-chip method is reduced by 10.3~11.0 K,the maximum drop is 18%,and the temperature uniformity effect is increased by 32.5%;compared with the inverted method,the temperature rise of the uniform temperature heat pipe solution of the formal installation method can be further reduced by 6.9~9.4 K,with the maximum dropping19.3%,and the uniform temperature effect is further increased by 83.6%,which is very significant.