基于Taguchi方法的微小通道性能分析与参数优化

In the pursuit of high efficiency, compact and light aviation fuel heat exchanger, various working conditions and structural parameters affecting the heat transfer and pressure performance of mini channel were explored and optimized. By using orthogonal design of Taguchi method and loss function analysis, the contribution and influence of different factors on the performance index were obtained, and the conclusion was proved to be statistically significant by additivity test. The results showed that the inlet velocity and channel flow pattern contribute the most to the heat transfer and pressure performance of the mini channel, and the cylindrical vortex generator channel could obtain the best comprehensive performance. In addition, it was found that the change of physical property of the working medium in the process of heat transfer would affect the calculation of Prandtl number, resulting in different influence laws and different optimization parameter combinations of various evaluation indexes of heat transfer pressure and comprehensive performance. Therefore, it was necessary to select appropriate evaluation indexes according to practical problems.