chtMultiRegionSimpeFoam internal face problem
 

I have a problem when im running chtMultRegionSimpleFoam, my objective is to simulate a heat exchanger and everything works fine. My problem is that i want to determine the mean velocity in different sections were my waterflow is split. Therefore i need internal face in my fluid mesh but i havent figure out how to solve this? I do my mesh in ANSA so i need to set a specific face type there. I will use the bc at the face

".*"
{
type calculated;
}

Anyone have any idea? I dont want to spilit my fluid to more than 1 region.

Dear Erik,

You should set the property type to Internal in ANSA
and then output the OpenFOAM mesh.
ANSA will put these faces into a faceZones file inside polyMesh

Hope this helps

Vangelis

Hello Vangelis

Thank you for the reply, i implemented the boundary condition and it works fine except i have some new phenonemas close to the internal boundary condition as you can see in the picture. So my question now for this boundary is

".*"
{
type calculated;
}

the right approach for this BC?

Thanks

Erik

I forgot to uppload the picture =)

Hi Erik,

What do we see at the image? Velocity probably, zero at the wall?

I assume what you see here is a matter of visualization and not a
real result.
Could you display the variables in Element and not Nodal position?

Vangelis