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2D cylinder k-omega boundary conditions

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Old   October 16, 2017, 07:20
Default 2D cylinder k-omega boundary conditions
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I am simulating a scour below pipelines using sedFoam ,the turbulence model is k-omega.
But I don't know how to set turbulence k-omega boundary.

some information
domain : 1m*0.2m
cylinder diameter D =0.04m
water depth = 0.15m;
I =5%
turbulence length L=0.07*D

inlet:velocity : u=uf/K*log(y/z0) uf=0.011m/s
k,omega : zeroGradient;
outlet:velocity :zeroGradient;
k,omega :zeroGradient;
cylinder: velocity :fixedValue uniform (0 0 0);
k=1.5*(U*I)^2=1.5e-4;
omega = Cmu^(-1/4)*k^(1/2)/L= 7.985;

top boundary is set zeroGradient and the bottom is similar to the cylinder
using wallFunction.

Can someone check my boundary conditions and tell me where i'm wrong?

Link with simulation(https://www.dropbox.com/s/wyrjairctj...pipe1.zip?dl=0)
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