Hi friends can any body please help me to write an UDF for Velocity inlet with respect to time for following readings please........

Time(s) Velocity(m/s) 5 3 7 5 10 8

Thanks for ur reply friend.......

Regards, Vijay

Try the step-by-step example given in the UDF manual which uses DEFINE_PROFILE. It should be fairly straightforward to understand it.

generate a relation of x or y velocity w.r.t. time, such that the above values (the ones which you have) are generated how to do it ? plot the values in excel, and when you do the regression, you can easily derive a relation

once this is done, use the Macro Define_Profile to make the UDF a very good example is shown in page 2-70 in Fluent 6.3 UDF guide...if you dont have it, let me know..i will send the guide ...and dont post same question again and again please.

best of luck.

This is my mail id.... vijayaragavan23@yahoo.co.in... Please send that help file rana.... Thanks in advance..Sorry for posting the same message...