Velocity as a function of height - Boundary condition.
 

Hi all,

I am modelling a flow through a wind tunnel and I need to set my inlet velocity as a function of height of the wind tunnel. (Velocity increases as height increases).

Is there any way to do it.


P.S: I am using Openfoam 4.0 and I think the groovyBC doesn't work.

There are a number of ways to do this. I believe that I've previously compiled swak4Foam for OF4. If you don't want to use groovy bc, then a fixedProfile boundary condition will work -- you can define a functional form or read velocities (as a function of height) from a csv. Information on how to do this can be found here : https://github.com/OpenFOAM/OpenFOAM...FvPatchField.H.

Caelan

Hi clapointe, Thanks for the info. I also found another way to do this. I got the cell location from writecellcentres command and then I calculated the velocity for each point and fed into the inlet as nonuniform list.

thanks once again for your quick reply.

Hamza
 

Hello Senthilathiban,

Did you manually calculated the velocity and then manually add it in the 0.U file?

I am also having the same problem.

Yes I calculated manually. But later I found another boundary condition fixedProfile

More infor at https://www.youtube.com/watch?v=rfNYVqU1py4&t=