本文对锯齿型通道内流动与换热的周期性进行了数值模拟.在Re=550～700范围内,入口段后的各几何周期的平均Nu数已随时间发生振荡,且随Re数增大,振荡起始位置朝入口方向移动;发生振荡的各几何周期的流场、无量纲温度场虽然在同一时刻不尽相同,但在不同的时刻可以找到近乎相同的流场和温度场,而且各几何周期平均Ⅳu数其振荡幅度基本相同,对时间求平均值后也基本相同,因此仍具有周期性充分发展的一些特性.
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