Discussion Forum

I am trying to mode a CFD problem with a boundary having two different boundary conditions of its two sides: one side is open boundary, another is slip wall which has prescribed displacement in detached direction. And here I introduce the Moving mesh Mode to simulate the free displacement of open boundary and prescribed displacement of slip wall. I create pairs for this two boundaries and set slip wall boundary as source. Here I set boundary pairs condition as continuity. At first two boundary detached. but Once the open boundary began to recontact the slip wall again the solver become hard to progress and stops due to error like "may reach a singularity"
Does anyone have same problem? help me out here, please