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time dependent inlet subroutine. HELP!!!

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Old   November 5, 2008, 14:23
Default time dependent inlet subroutine. HELP!!!
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jimmer
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Hello. I am simulating transient multiphase flow. My inlet is time dependent but I can't use a table. STAR 3.26 doesn't give u this option so I have to use a subroutine. Can anyone tell me what to put into bcdefi.f? The only thing I want is y-velocity (V) increasing at a certain rate with TIME. Your help will be much appreciated
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Old   November 5, 2008, 15:08
Default Re: time dependent inlet subroutine. HELP!!!
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Pauli
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Then enter: v = A * time where A is your rate constant. The remaining parameters will default to the values set in the NavCenter.

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Old   November 5, 2008, 17:57
Default Re: time dependent inlet subroutine. HELP!!!
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jimmer
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do I have to determine the global variable TIME in the bcdefi subroutine? I tried what u said but the subroutine didn't work. thanks!
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Old   November 5, 2008, 18:57
Default Re: time dependent inlet subroutine. HELP!!!
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Pauli
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No.

The bcdefi.f template should have the line:

INCLUDE 'usrdat.inc'

When you run the code, star will put usrdat.inc in your ufile directory. The variable time is provided by a common block within usrdat.inc. Time gives the current simulation time.

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Old   November 10, 2008, 09:49
Default Re: time dependent inlet subroutine. HELP!!!
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jimmer
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Thanks!!!
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