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计算一个简单的管道流,进出口用了周期性边界,为了跟文献中的实验数据对比,需要运行在指定的雷诺数下。但是周期性边界是设置pressure gradient,这个值如何确定呢? 我是用大涡模拟,fluent手册说瞬态不建议用specified mass flow rate。 如果靠手一点点调压力梯度,那要调到猴年马月。😭
我现在想能不能用Rans稳态先算,设置质量流量,然后算稳定后获得压力梯度,再设置到大涡模拟中?
请高手解惑,谢谢