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Forum: Main CFD Forum

April 7, 2009, 23:56

Replies: 13

Writing Turbulence Solver, k-e model

Views: 3,664

Posted By harishg

This is a numerical problem and it has nothing to...

This is a numerical problem and it has nothing to do with the with damping function. You can use the modifications of Wilcox. Use the expression for omega to calculate the dissipation. This is...

Forum: Main CFD Forum

April 7, 2009, 17:00

Replies: 13

Writing Turbulence Solver, k-e model

Views: 3,664

Posted By harishg

You can set the values of k and epsilon at the...

You can set the values of k and epsilon at the first grid cell above the wall to the asymptotic value. This has been commonly employed for k-omega models even when they are integrated straight to the...

Forum: Main CFD Forum

April 7, 2009, 02:58

Replies: 13

Writing Turbulence Solver, k-e model

Views: 3,664

Posted By harishg

What numerical scheme do you employ for the...

What numerical scheme do you employ for the convection term ? Use of central differences can sometimes cause oscillation and you might need to add a bit of dissipation with upwinding or artificial...

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