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Mass flow = 0 on opening

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Old   July 30, 2002, 15:42
Default Mass flow = 0 on opening
  #1
Jens
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Hi,

I have a model with large number of inlets, outlets and few openings. Unfortunably, the database file for this problem is not working anymore due to disk error.

I would like to try to close 3 openings in the model.

It is possible to specify an opening with Zero Mass Flow rate ???

How will this influnce on the model,- does it work as a wall or ???

Thanks a lot in advance.

Regards

Jens
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Old   July 31, 2002, 07:14
Default Re: Mass flow = 0 on opening
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Tommaso
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Hi Jens, yes , it's possible to specify an opening with zero mass flow rate defining it as MASS FLOW BOUNDARY and setting in command file or in USRBCS the zero flow condition.I have found a better convergence using the fortran subroutine.This type of patch works as a closed sect rather than a wall.

Regards

Tommaso
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Old   August 2, 2002, 18:13
Default Re: Mass flow = 0 on opening
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Jan Rusås
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If you just want the old openings to be walls, you can just remove them in the geometry file. Remember to adjust the number of patches.
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