本文采用改进的低Re数k-ε模型-低Re数kθ-εθ模型以及局部非热平衡模型,将主流区和多孔壁面区进行耦合,通过数值模拟研究了发汗冷却过程中的流动与换热问题.计算结果表明:多孔壁面中靠近主流区的部分温度梯度很大;随着冷却剂流量的增大,壁面上的最高温度明显下降;就本文所选取的参数而言,在发汗冷却所用的冷却剂的量占总流量的1%左右时,冷却效果非常明显.
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