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-   -   vortex shedding, steady, meshing, transient? (http://www.cfd-online.com/Forums/main/97455-vortex-shedding-steady-meshing-transient.html)

rick_ February 17, 2012 08:39

vortex shedding, steady, meshing, transient?
 
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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