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reference pressure cell-where?

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Old   May 26, 2003, 04:24
Default reference pressure cell-where?
  #1
Micha
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Hello, I have some problems with a pressure outlet. The flow in some cells is directed sharply inwards, although it should flow outwards. I thought it could be some problems with my choice of the reference pressure cell?! Does anybody know if there is anything important to receive attention choosing the reference pressure cell? Thanks, Micha
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Old   May 27, 2003, 01:48
Default Re: reference pressure cell-where?
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Stefan
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AFAIK, the choice of the reference pressure cell is only important in compressible flow.
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Old   May 28, 2003, 09:41
Default Re: reference pressure cell-where?
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John
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If you have pressure boundary, then the reference pressure cell is not important.
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Old   May 28, 2003, 10:45
Default Re: reference pressure cell-where?
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x
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Switch the "Environmental Pressure" option in the pressure boundary region definition.

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Old   May 30, 2003, 09:49
Default Re: reference pressure cell-where?
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Micha
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I changed the boundary condition at the outflow from 'pressure' to a simple outflow condition, and got a good solution. Then I changed once again to pressure boundary and made a restart. Now the field was calculated as expected. Probably, there was an initial problem when calculating with the pressure boundary from the start on.
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Old   June 2, 2003, 06:50
Default Re: reference pressure cell-where?
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Dejan
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In Multiple Reference Frame, which have INLET-PRESSURE boundary coupled pairs, itÅ› important to use some coupled monitoring and referenced points pairs.Its would provide good or bad convergence.
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Old   June 20, 2003, 06:27
Default Re: reference pressure cell-where?
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Jing
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If I have compressible flow field and do not have pressure BC, where should I define the reference pressure cell?

Thanks!
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