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vortex shedding, steady, meshing, transient?

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Old   February 17, 2012, 08:39
Exclamation vortex shedding, steady, meshing, transient?
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Rick Rick
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hi, guys.
i'm running RKE flow over a cyl with Re=10k, St=0.2. steady run encountered fluctuations, whats new? what is odd, is that turning to transient killed all the instability. have to admit that the mesh is quite coarse. i understand that coarse mesh could kill the instability by itself and make steady run really steady, but it did not. the damping actually occurred @ transient run.
could you please explain me what is going on?
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