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Old   May 25, 2006, 20:19
Default Moving Boundaries
  #1
Bharat
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Hello Fluent users: I have been trying to solve a case study in fluent involving moving walls but was not successful. Every time when i try to repeat the examples in the manual, i get the following error message after a few iterations.

"Negative cell volume detected"

Any thoughts to overcome this would be very helpful.
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Old   May 26, 2006, 04:30
Default Re: Moving Boundaries
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skd
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Hi, Try to reduce your time step!

Skd
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Old   May 27, 2006, 16:05
Default boundary conditions
  #3
sadoun
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What are the sutible B.C for intake air flow through engines
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Old   May 27, 2006, 16:07
Default Re: boundary conditions
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sadoun
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fuel injection directly into chamber at 40 degree BTDC. which moel is for this problem
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Old   May 28, 2006, 15:35
Default Re: boundary conditions
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sadoun
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What are the sutible B.C for intake air flow through engines .(open inlet valve)
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Old   June 8, 2006, 01:34
Default Re: Moving Boundaries
  #6
Fabrice
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Hi guy,

I've got exactly the same problem than you. In fact you need to input a dynamic mesh. I wonder if we don't need any grid interfaces in more, I will let you know if I succeed.
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