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a negative element volume has been detected

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Old   June 9, 2014, 05:39
Question a negative element volume has been detected
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Hello guys,

I am simulating a centrifugal compressor consists of rotor and stator zones via Ansys CFX 15. when I wanna run the calculation I face with an error which says:
'' a negative element volume has been detected ... ''
type is steady state and I examined with both stage and frozen rotor models.
Also, grid was created by Pointwise software.
I would appreciate if someone could help me.
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Old   June 10, 2014, 07:40
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Glenn Horrocks
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This error is common in ICEM when people smooth the mesh too much in the mistaken belief that more smoothing is good. I do not know Pointwise/Gridgen very well, but I presume it has the same trap.

I recommend you remesh and do little or no mesh smoothing.
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Old   June 10, 2014, 07:46
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many thanks for your consideration.

When I wanna run this problem without any rotation part, I mean I try to just check either it works or not, it works without any error, but when I use turbo mode and define centrifugal compressor,.... after all this error is shown.
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