用非稳态层流模型对锯齿型通道内周期性充分发展流动与换热进行了数值模拟.Re=600时数值结果已发生明显振荡,而从入口段算起的第9、10个几何周期的平均Nu数与用周期性充分发展条件计算得到的平均Nu数吻合良好;在此基础上,计算通道周期长度L与通道垂直高度b的比值及通道倾角α等几何结构尺寸对周期性充分发展流动和换热的影响,计算结果表明,增大α和减小L/b都易促使流动产生涡旋,从而增强换热.
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