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January 15, 2013, 05:22 |
UDF for inlet velocity profile
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#1 |
Senior Member
Francisco
Join Date: Mar 2012
Location: Spain
Posts: 273
Rep Power: 15 |
Hi guys,
I'm using a UDF for a velocity profile to define the atmospheric boundary layer in a 2D problem. I've used the attached c code as explained in the user manual, apparently it's interpreted properly but results don't show any influence on the profile, it appears to be just a uniform velocity at the inlet (see attached picture for 5s). 1) Which can be the problem? Is there something wrong in the code? 2) What will happen if I modify the ymax coord in the code so it's higher than the domains's ymax? 3) Also I would like to use a profile for the turbulence intensity (TI), but Fluent only allows me to use it for k and epsilon. Is there a way to use TI and Turbulent Length Scale (TLS) instead of applying the formulae for (TI,TLS)(k,epsilon). 4) I will need to apply the same profile to a 3D case. It will be exactly the same in the x-y plane and constant in the z-direction. Can I use directly the same code? If not, what do I have to modify? Thanks you all! |
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Tags |
inclined flat plate, inlet, turbulence profile, udf, velocity profile |
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