对等热流和等壁温边界条件下圆管内层流脉冲流动对流换热问题进行了数值模拟.在等热流边界条件下的数值计算结果与理论解吻合很好.计算结果表明:在等热流和等壁温边界下脉冲流动可引起速度、温度以及努塞尔数随时间波动,振幅越大,脉冲频率越小,波动越大.但它们的时均值均等于在相同雷诺数下稳态流动的值,脉冲流动不能强化换热.
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