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snGrad(rho) blows up my calculation - problems with the BC |
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June 20, 2013, 08:17 |
snGrad(rho) blows up my calculation - problems with the BC
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Member
Nicklas Linder
Join Date: Jul 2012
Location: Germany
Posts: 35
Rep Power: 13 |
Hi everybody!
I have the problem, that in some configurations (e.g. same case on 1 or 4 CPUs) my calculations blow up. I identified the calculation of rho as a possible source of my problems. The solver I use is interFoam in OF version 2.2.x. I use a modified boundary condition for alpha, which is derived from the mixed BC. So besides e.g. the type and the value for a zeroGradient BC I have to provide some additional fields (refGradient, refValue, valueFraction). If i write out the rho field for the first timestep, everything seems to be fine until these additional fields are listed. They have values of xxxe+235 or in the next step nan for the mentioned refGradient or refValue or valueFraction. I would just be glad if these fields are not touched for rho. The actual "value" of the BC is correct again. Any ideas or which additional information can I provide? Thanks in advance! Nicklas Last edited by nlinder; June 21, 2013 at 04:02. Reason: added test Case |
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