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紊流研究中为什么要引入时均概念?紊流时,恒定流与非恒定流如何定义?

问答题
2022-05-27 16:13
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正确答案
把紊流运动要素时均化后,紊流运动就简化为没有脉动的时均流动,可对时均流动和脉动分别加以研究。紊流中只要时均化的要素不随时间变化而变化的流动,就称为恒定流。

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