July 9, 2009, 09:52
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how to write user fortran for turbulence model
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#1
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Senior Member
wayne.zhang
Join Date: Mar 2009
Location: Shanghai, Shanghai, P.R.China
Posts: 309
Rep Power: 18
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Hi everyone
for i am using ANSYS CFX 110, i donot have rotating and curvture modification compared with CFX 120. i want to add some modification to SST model in CFX 110. according to a reference paper (rotation and curve modification of SST model by Richardeson number defined in the A.Hellsten`s paper(AIAA A98-32817), it is easy to add this modification by only a new coefficient "F4",which is defined based on Richardeson number to term beta*omega^2. so i think what i should do is to add "-beta*omega^2+F4*beta*omega^2" to the source of omega eqution. I have try this modification also the new model in CFX 120 in OpenFOAM.and it seems really useful. and now i want to do this in CFX for carefully comparation for my other result from CFX.but i have almost no experience in user fortran. so would mind give me some example?
thanks
yours wayne
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