- #1
tommyers
- 58
- 0
Hi,
I am not sure if this is the right place to post a COMSOL question. If not I apologise, could you point me to the right place.
I have a 3D geometry in COMSOL shape like a "T" where I want to model flow using navier stokes and a chemical diffusion using convection and diffusion. Both work independantly. However, when I try to solve them both together, because they are coupled. I get this following message:
Now I have read what might cause this, suggestions include my mesh type, I have varied this but without success. The other was sharp corners, my geometry has sharp corners, and suggestions have been to fillet the corners, however, I can't figure out how to fillet 3D corners.
Moreover, what could the problem be?
Regards,
Tom
I am not sure if this is the right place to post a COMSOL question. If not I apologise, could you point me to the right place.
I have a 3D geometry in COMSOL shape like a "T" where I want to model flow using navier stokes and a chemical diffusion using convection and diffusion. Both work independantly. However, when I try to solve them both together, because they are coupled. I get this following message:
Error:
Time 0:
Matrix is singular.
Out_of_memory_LU_factorization
Last time step is not converged.
Now I have read what might cause this, suggestions include my mesh type, I have varied this but without success. The other was sharp corners, my geometry has sharp corners, and suggestions have been to fillet the corners, however, I can't figure out how to fillet 3D corners.
Moreover, what could the problem be?
Regards,
Tom