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rhoSimpleFoam blows up with second order schemes

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Old   February 25, 2014, 07:58
Smile rhoSimpleFoam blows up with second order schemes
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Liam
Join Date: Aug 2013
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Many is on a distinguished road
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!
Attached Files
File Type: gz rhoSimpleFoamCrash.tar.gz (5.4 KB, 3 views)
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