second order upwind cause divege !! -- CFD Online Discussion Forums

August 4, 2009, 16:00	second order upwind cause divege !!	#1
khsiavash New Member khsiavash Join Date: Apr 2009 Posts: 3 Rep Power: 17	Dear friends I`ve developed a non linear eddy viscosity model with UDF.when I use the first order upwind for all transport equations it is OK! solution converged. But when I switch on second order upwind solution is going to diverging.up to an error "turbulent viscosity limited to....." and finally floating point. how can I solve this diverging ?

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