# Change Solver

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 April 16, 2003, 06:38 Change Solver #1 bamboo Guest   Posts: n/a Sponsored Links I changed the Solver from 2D to Axisymmetric in FLUENT and kept all other items same. But after the Grid Check,there is a WARNING message: Grid check failed. The relative information as following: Grid Check Domain Extents: x-coordinate: min (m) = 0.000000e+00, max (m) = 5.000000e-02 y-coordinate: min (m) = 0.000000e+00, max (m) = 3.500000e-01 Volume statistics: minimum volume (m3): 6.732661e-12 maximum volume (m3): 8.213853e-06 total volume (m3): 6.383493e-03 minimum 2d volume (m3): 1.953960e-10 maximum 2d volume (m3): 4.264212e-06 Face area statistics: WARNING: non-positive face area exist. I am puzzled that it is a 2D problem, why the volume figures shown?

 April 16, 2003, 07:35 Re: Change Solver #2 mreip1 Guest   Posts: n/a When using axisymmetry in Fluent, the axis of rotation has to be on the x-axis. You may correct this inside Fluent with the grid->translate option. Regards.

 April 16, 2003, 07:54 Re: Change Solver #3 bamboo Guest   Posts: n/a 3ks a lot, I will try.

 April 16, 2003, 08:12 Re: Change Solver #4 bamboo Guest   Posts: n/a 3ks a lot , but if i change the model in GAMBIT , then do i need "translate"?

 April 16, 2003, 08:34 Re: Change Solver #5 bamboo Guest   Posts: n/a i changed the model in Gambit(rotation 90), to make it on the X-asix,but the Grid Check failed: Grid Check Domain Extents: x-coordinate: min (m) = 0.000000e+00, max (m) = 3.500000e+01 y-coordinate: min (m) = -5.000000e+00, max (m) = 2.143061e-15 Volume statistics: WARNING: non-positive volumes exist. minimum volume (m3): -5.015160e-01 maximum volume (m3): -1.984904e-04 total volume (m3): -1.044429e+03 minimum 2d volume (m3): 3.960858e-04 maximum 2d volume (m3): 4.154485e-02 Face area statistics: minimum face area (m2): 1.458132e-03 maximum face area (m2): 1.026326e+00 This time, the volume figures are negetive. Thanks a lot!

 April 16, 2003, 09:21 Re: Change Solver #6 gforce Guest   Posts: n/a Using other mesh types in gambit maybe work.

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