UDF velocity inlet
 

Hello everyone,

i have little problem, i have created an UDF File, for velocity inlet, in a tube but when i plot it with report definition, i dont get a sinusoid, i want to know what is the problem, i have define correctly UDF file in user define fonction, but the plot and values obtained aren't correct.

Thank you for your help

Hi,
The profile UDF looks fine. if there is any compilation issue, please check for errors.
if there is no compilation issue Please see below:
1. since your velocity profile is dependent on time, if you plot at the beginning it will give Uinlet=30. but as the time gets updated, you will see a nice sine profile curve at your velocity inlet.