Learning Forum

[cylindrax]

I found those some UDF code online and I tried to modify to suit my need. I have Reynolds number of 10 000 so i got an inlet velocity of about 3 and for the pressure i set it up to be atmospheric pressure. I set my omega to be 12. Now my problem is that i don't know if my code is write. additionally, i seen that a video who said i need to write the code in C save it and then load in FLUENT. I will like some guidance.

 

 

[vganore]

See following tutorial. It shows how to write and apply parabolic velocity profile at inlet using UDF.

https://www.youtube.com/watch?v=JyvMWnJFDxc

[cylindrax]

Thank Vganore for your help. I will watch and try my UDF code.

[marinak]

To check if your boundary condition is implemented correctly, you can record pressure and velocity time history at certain points at the boundary(It should look like a sinusoidal wave). You can plot it against the sinusoidal wave that you expect to see, if these 2 will coincide, your condition is correct.

[Ananth Narayan]

What does float x[3] and float y means. I mean what's the purpose.

[DrAmine]

Float array. That is basic programming C.

[DrAmine]

Float y is variable declaration that y is a real float not an integer.

[DrAmine]

In python there is no need to declare a variable it is implicitly done with proper ttpe