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May 21, 2014, 10:56 |
EMMS in fluent 14.5 diverging problem
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#1 |
New Member
Join Date: Aug 2012
Posts: 22
Rep Power: 14 |
Hi Everybody:
I'm simulating a 2D Fluidized Bed Riser in Ansys Fluent 14.5 using an Eulerian approach, k-e turbulent model, Johnson-Jackson wall boundary condition. When I use some drag model included into fluent, I havo no problem about the convergence, but I can not obtain the proper mass flux profiles into the riser, so I tried to use the EMMS drag model as an UDF, I compiled it well, without any error message, but when I started the calculation procedure, before the first iteration I got the following error messages: Updating solution at time levels N and N-1. done. iter continuity u-aire u-solidos v-aire v-solidos gt-solidos vf-solidos time/iter mp-x-momentum equations: Divergence detected in AMG solver: pressure correction Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure correction Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure correction Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure correction Divergence detected in AMG solver: vof-1 Primitive Error at Node 0: floating point exception Primitive Error at Node 1: floating point exception Primitive Error at Node 2: floating point exception Primitive Error at Node 3: floating point exception I test my problem using the modified Syamlal-O'Brien drag model example, and the run progress properly, so I understand that the problem is the EMMS UDF, but I don't know what I should do. Any help is very welcome. Regards Last edited by jipaz; May 21, 2014 at 11:32. Reason: Some typing mistakes |
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Tags |
diverging, emms, fluent, riser |
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