|November 12, 2009, 16:43||
Join Date: Nov 2009
Posts: 5Rep Power: 7
My FMG completes level 4, but when it goes to level 3, it says:
Normalized Residual = 1.#QNAN
So what happened between level 4 and 3?
at level 4, it says:
FMG: FAS reached maximum iterations.
Normalized residual = 729.568
FMG: Interpolate solution on next level...end
then it begins the messed up level 3.
The 1.#QNANs continue through levels 2 and 1.
Finally, it ends with:
Primitive Error at Node 7: Floating point exception
What does all this mean? And how do I fix it?
|November 12, 2009, 19:00||
Join Date: Jul 2009
Location: Ohio, USA
Posts: 169Rep Power: 8
If that doesn't work, you could try increasing the number of multigrid levels, increasing the number of iterations performed on course multigrid levels, or lowering the residual threshold on the course multigrid levels.
You should also make sure that your boundary conditions, grid, and case setup are all ok first. Does your simulation bomb if you run it without fmg?
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