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Some questions about pier scour simulation

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Old   February 22, 2017, 21:41
Post Some questions about pier scour simulation
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1-When I simulated the flow field, I have adopted the RNG turbulent model, but the horseshoe vortex is not abvious in front of the pier, why? (see 1.png )
2-When I simulated the flow field, The bed shear stress around the pier is small, shear stress amplification coefficient is 3~4 comparing with the inlet bed shear stress which is undisturbed by pier. So this will result in the scour depth is smaller than experiment.
I will upload my prepin, Can anyone help me to check it?
Thanks a million!
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