Deformable interface
 

Hello,

I am currently trying to model a multiphase flow that has to pass through a deformable porous medium and I am having issues with my dynamic mesh.

In the past, I never had troubles enabling motion for any “wall” boundaries conditions using “grid_motion” UDF. However, when I now try to move an “interior” interface between my porous zone and another fluid zone I get an "access_violation" error from FLUENT. So I was wondering if there a method in FLUENT to move the nodes of a non-solid interface between two fluid zones.

Also, is there a way to change node position for individual cells in an entire cell zone? I tried using “grid motion” but I get an access violation error when I start the simulation.

Any suggestion or help would be welcomed.

Thanks in advance.

Simon