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catching shedding vortex in 2d analisys

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Old   February 7, 2011, 19:07
Default catching shedding vortex in 2d analisys
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i'm a cfd newbie and i'm trying to solve a tipical cfd problem: catching shedding vortex (shown in the figure below) generated by a steady flow around a circle (2D) with Fluent

i'm trying to solve it with a k-eps model (unsteady analisys). for the mesh i use a boundary layer around the circle and a triangular growing size mesh all over, (more thick in the tail) is this correct?
and about the wall condition, do i have to use one?

thank you very much!
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