[oranjesr]

Hi all, I am doing a FSI benchmark of the icoFsiElasticNonLinULSolidFoam solver in foam-extend 3.2, meshes is a 2D case with z direction set to empty.
The case can run good for sometime, but at certain condition, it crashes. Output the deformation of fluid and soild meshes , the reslut is strange, most fluid mesh points at interface move correctly,however, the corner points(points shared by two orthogonal faces) not aligned all the time, and finally leading to the distortion of fluid meshs.

Any one encouter similar problem?

[oranjesr]

it seems when move the solid patch, the points of solid patch are interpolated w
using the leastsquare method from volume, but on the fluid side, i don't find out the correct source of the movement of points??????????????