Hello,
1 - I'm simulating a Newtonian incompressible fluid flow in a porous medium (medium formed by 1000 solid grains). For a mesh of 124816 elements, the computation runs normally and I get results. But when I refine the mesh, I get the error message (Nonsymmetric matrix found) and solver stops working.
Do you have any idea of the origin of this error?
2 - Can you please tell me how can I generate a structured mesh or a mesh of hexahedral elements for the geometry of the model here attached.
Thank you.
Mehrez Agnaou
1 - I'm simulating a Newtonian incompressible fluid flow in a porous medium (medium formed by 1000 solid grains). For a mesh of 124816 elements, the computation runs normally and I get results. But when I refine the mesh, I get the error message (Nonsymmetric matrix found) and solver stops working.
Do you have any idea of the origin of this error?
2 - Can you please tell me how can I generate a structured mesh or a mesh of hexahedral elements for the geometry of the model here attached.
Thank you.
Mehrez Agnaou