[spv24]

Hello,

I would like to simulate the inflow situation of a catalyst. The catalyst consists of a typical channel structure. There are a lot of small channels in the catalyst brick.
I think it is a bit difficult and it takes to much time to draw and mesh the catalystbrick. So I am looking for a suitable BC for the front face of the catalyst brick.
What would be a good, realistic BC for simulating the inflow. I need the velocity distribution in the front face plane of the catalyst.

Is it possible to have a BC in a flow domain to force a 1 dimensional flow for simulating the catalyst as separate flow domain? Let the channel direction in the catalyst be x then the U_y and U_z components should be set to zero. Is this possible? Does anybody have better suggestions?

Thanks Sammy.