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convergence problem k-kt-omega model

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Old   April 21, 2015, 07:46
Default convergence problem k-kt-omega model
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Jules Katharina
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Hi everyone,

I'm trying to model gas flow through a pipe filled with solid pellets using the k-kt-omega turbulence model (2D for now, when the solution works I#M switching to 3D). But I can not reach convergence. All the residuals reach the convergence criterion except turbulent (kt) and laminar (kl) kinetic energy. I already tried decreasing the under-relaxation factors, which did not help. Does anybode have any magic tricks or something that lead to a solution?
Any help would be very welcome =)
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