|February 25, 2014, 07:58||
rhoSimpleFoam blows up with second order schemes
Join Date: Aug 2013
Posts: 26Rep Power: 3
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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