Hello,

I'm using a UDF to create a variable temperature profile at a wall boundary condition. When I apply it at the bottom wall of my rectangular 2D vertical domain it works well, but when I apply it at a side wall, the temperature of the wall remain constant. How is it possible ? why is it working well in x direction and not in y direction ?

Thanks for your help!

Make sure you have given the coordinate 0,1,0 for vertical wall or basically make sure u have this line written out correctly as follows y=x[1];

let me know if this works

Yes, it is better working now !