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Old   February 17, 2009, 04:42
Default negative volume
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hi all i am getting a negative volume in an unsteady state simulation of a bearing air-gap. i am using a cg motion udf for a shaft.

whats the remedy?
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Old   February 17, 2009, 04:50
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Mustafa Ayad
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Dear Rishikesh Try to use smaller time step size. Regards. Mustafa Ayad
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Old   February 17, 2009, 05:34
Default Re: negative volume
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smaller time steps would work but after some iterations it would again come with negative volume so just check your mesh and also the geometry before u do the problem..but try using smaller time steps it would work atimes.. regards hari
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