Re: [Libmesh-users] Mesh issue in a system of equations

2017-11-18 Thread Renato Poli
So I realized my issue is in fact a linear solver convergence issue... It seems that I created a difficult matrix to solve with the pressure variable being hacked sort of manually. Getting the tolerance down and increasing the solver iterations did the job (although runtime went up). Please di

[Libmesh-users] Mesh issue in a system of equations

2017-11-18 Thread Renato Poli
Hi I am struggling here with boundary conditions in a system of equations. I am solving a system for 3 vars: U,V,P (displacements and pressure). I decoupled pressure and displacements as a first attempt (in fact, Kpp gets to be an identity matrix), Fp is zero. To test, I generated a mesh in CGAL