I am solving free and porous media physics in the square domain (3D). I want to calculate average flow velocity through one of the four sides of the wall along the length. In 2D, I know that we can use projection coupling variables. I have no idea how to do this for 3D.
I cut my domain along the length into several smaller domains. Now I can use surface average in the derived values to compute the average velocity through the wall at different lengths. The problem is I have many small domains and I hate to manually select the surface every time for computing average. If I select all surfaces at once, I get average of all surfaces not for each surface. Is there anyway to compute surface average automatically at different surfaces?.
I hope you understand what I am saying.
I cut my domain along the length into several smaller domains. Now I can use surface average in the derived values to compute the average velocity through the wall at different lengths. The problem is I have many small domains and I hate to manually select the surface every time for computing average. If I select all surfaces at once, I get average of all surfaces not for each surface. Is there anyway to compute surface average automatically at different surfaces?.
I hope you understand what I am saying.