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@学流体的小明 感谢大佬,我是按第二种给的压力梯度为1,结果一直掉,可能是我算的时间太短了,想问一下如果是用pertubU给了一个初始场之后,用icofoam算准dns,大概得算多少秒才能得到完全发展得湍流?
@SSSSK 我用给定槽道平均速度的方法算摩擦雷诺数550的槽道,根据这个摩擦雷诺数的变化曲线,感觉得到10s以后吧,你也可以画这样一条曲线看看。
@学流体的小明 感谢,我这算了三天才算了不到六秒,感觉算的有问题就停了,我再继续算算看