请教非定常问题

helloCFD

如何估计物体尾迹流中非定常涡脱落运动的周期？已知来流速度、Re数等条件，来流均匀。

newcfd

Find one or more fixed points where you store your variables and record
the changes of the speeds or other variables with time. You can get a
closed curve(s). The time you need to close the curve(s) is period.
Do several times and make an average. It is not very exact.  

newcfd

Find one or more fixed points where you store your variables inside the
periodic flow area and record the changes of the speeds or other variables
with time. You can get a closed curve(s). The time you need to close the
curve(s) is period. Do several times and make an average. It is not very exact.