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December 25, 2004, 03:08 |
Solving for turbulence
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#1 |
Guest
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Hi, I am trying to solve the k-w SST model as two scalars. I know it comes with the program but I need to change the VIST values so that only the VIST used in the mean flow equations is changed and not the ones in k-w equations.
I used sorsca.f and diffus.f to model the equation but my result would'nt match with that given the built in SST model. So, I tried to test it with the normal k-e model. And, that does match atall either.... I am including the program from sorssca below. My flow is incompressible AND 2D. GENERATION=2.0*(GU(1,1,IPSTAR)**2 +GU(2,2,IPSTAR)**2))+ ((GU(1,2,IPSTAR)+GU(2,1,IPSTAR))**2 GENERATION=MAX(0.0,GENERATION*VIST) TERM=CMU*DEN*TE/(VIST+SMALL) IF(IS.EQ.1)THEN S1P=GENERATION S2P=TERM*DEN ELSEIF(IS.EQ.2)THEN S1P=CEPS1*GEN*TERM S2P=CEPS2*TERM*DEN ENDIF The results dont look anywhere near the same as that given by STAR CD. Any idea why? I am using the same boundary conditions and discretization details. |
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January 3, 2005, 10:27 |
Re: Solving for turbulence
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#2 |
Guest
Posts: n/a
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Aren't FORTRAN variable names limited to 8 charecters?
If so, your variable GENERATION is too long & may be the problem. If not, please disregard this comment. My brain is still rebooting from the holidays. |
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