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CFX withy radiation can not work

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Old   January 9, 2012, 05:08
Default CFX withy radiation can not work
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sunpeng
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Hello, everyone

I met a problem when I using the cfx to calculate a 3-D cascade flow conjugate heat transfer problem.

when I only consider the convection and condution, the cfx-solver can work and I can get a result. But when I add the radition, the cfx-solver can not work. The radiation model I used is the Discret transfer model, the spectral model is weigthed sum of gray gases.

The cfx-solver stopped and the .out is as blew:

Radiation Coarsening Information

Domain Name: Coolant Domain

Target coarsening rate = 64
Number of fine grid elements =2473259
Number of radiation elements = 44048
Actual coarsening rate = 56

Domain Name:Hot Gas Domain

Target coarsening rate = 64
Number of fine grid elements =5905449
Number of radiation elements = 114592
Actual coarsening rate = 51


ERROR #001100279 has occurred in subroutine ErrAction.
Message:
Stopped in routine SU_SURF_TRI_3


Does anybody know where the problem is and what I should do to get a result.
I hope I can get help here and Thanks a lot.
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Old   January 9, 2012, 05:47
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Glenn Horrocks
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I would try different coarsening rates. Just a guess, but easy to try.
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Old   January 9, 2012, 11:42
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You can try:
1. Make sure you are not using an old version of CFX
2. If you have a thin surface, split the two sides to appear in separate boundary conditions.
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