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rhoSimpleFoam blows up with second order schemes |
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February 25, 2014, 07:58 |
rhoSimpleFoam blows up with second order schemes
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Member
Liam
Join Date: Aug 2013
Posts: 40
Rep Power: 12 |
Hi Foamers,
I attach the log filoe of my case. Without any apparent reason, rhoSimpleFoam blows up after a few iterations (residuals was going good before this). I am using second order schemes (Gauss linear corrected for laplacians, Gauss linear for gradients and Gauss SFCD for convective terms). I attach also the checkMesh log. I am simulating pressure driven flow through a complicated channel with two inlets and an outlet. I obtain good convergence with Gauss upwind and Gauss linearUpwind in div(phi,U) and div (phi,e), but I would like to switch to higher order schemes...Reynolds number is about 600. Does anybody know what's happening? I suppose that if a second order scheme doesn't converge I can see this in residual plot, but I don't understand why it explodes! Thanks in advance! |
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