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Absolute Pressure Minimum limit (1 Pa)!!!!!!

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Old   September 16, 2012, 03:10
Question Absolute Pressure Minimum limit (1 Pa)!!!!!!
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navid
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Hi,

During my simulation which is an unsteady two-phase compressible simulation using VOF, I saw that in some cells in domain the absolute pressure values reach Fluent's lower limit which is 1 Pa. I don't get any message that says "pressure has been set to 1 Pa in specified points" but the rhythm of the residuals change so I suspected and went and check pressure contours and realize that problem. Does anybody know what this means exactly? Am I having divergence? I am sure it is not physical at all.

How can I solve it? changing mesh will help? I have reduced time step to very very low values but still no change.
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Old   September 16, 2012, 18:04
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navid
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Please I really need some fast ideas and comments
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