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fluent_urs July 7, 2008 08:15

velocity update
dear all,

if i want to update the particle velocity after every time, how do I do it ?

hoping for a reply.

best regards.

hbinma July 7, 2008 08:30

Re: velocity update
Maybe you should use "UDF"(User-defined) regards

fluent_urs July 7, 2008 09:04

Re: velocity update
hi, thank you for your reply. yes, i understand that i need to use UDF. but can you show me with an expample. regards.

hbinma July 8, 2008 01:29

Re: velocity update
There is a UDF Manual in FLUENT Documentation. If you do not have it, you can find it in this link:

I hope it can help you.

fluent_urs July 8, 2008 02:34

Re: velocity update
dear sir,

thank you very much. I downloaded it. Ccan you tell me which UDf example are you referring at ?

thanks and regards.

hbinma July 8, 2008 10:52

Re: velocity update
There is a FLUENT 6.2 Tutorial Guide in this link: The 4th topic, Modeling Unsteady Compressible Flow ,involve something about using UDF. However,if you want to know that how to write UDF functions, you must read the whole FLUENT 6.3 UDF Manual.

rr123 July 8, 2008 11:41

Re: velocity update
thanks, i appreciate your help. but unforttunately you were not able to understand my query..

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