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Old   January 5, 2005, 10:29
Default Hi: I am a new user of OpenF
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S.H.Yang (Yang)
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Hi:
I am a new user of OpenFoam,I have some questions about OpenFoam:
1)when I run sonicFoam/forwardstep case,I change the initial internal U field from (0,0,0) to (3,0,0),why the calculation became divergence?
2)I want a calculation with sonicTurbFoam to keep the CoNum constant instand of DeltaT constant ,how can I do this?
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Old   January 5, 2005, 14:54
Default Hi, I did 2) in the follow
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Luiz Eduardo Bittencourt Sampaio (Sampaio)
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Hi,

I did 2) in the following way:
added the following line to the code after calculating CoNumber (# include CourantNo.H)

alfat = CFL/CoNum;
runTime.setDeltaT(alfat*runTime.deltaT().value());

Obviously, alfat had been previously defined as scalar and CFL was read from a file (defined as float).

Cheers,
Luiz
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Old   January 6, 2005, 03:42
Default Sampaio Thanks for your help
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S.H.Yang (Yang)
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Sampaio
Thanks for your help.It works fine.
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Old   January 11, 2005, 10:28
Default You should be aware that Open
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Eugene de Villiers (Eugene)
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You should be aware that OpenFOAM already has a mechanism for maintaining a steady maximum CFL number.

See the dambreak tutorial and interFoam solver for details.

Eugene
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