Ohmic QS simulation with anisotropic material fails

[oeddaoui]

Hi,

I'm trying to run an Ohmic QS simulation with anisotropic material, but the simulation always fails and I get these error messages :
ERROR: Linear system solver could not determine the solution.
ERROR: Linear system solver could not determine the solution.
ERROR: Simulation 'Anisotropic simulation' failed on 2023-Dec-13 09:49:24
ERROR: iSolve framework failed (see previous error messages).
ERROR: The solver process returned an error code:

Here is my test case:
Model:

Anisotropy results:

Ohmic QS simulation config and simulation results:

Except for material conductivity, both anisotropic and isotropic simulations have the same configuration, yet the simulation with anisotropic material fails.

Is there a setting or step I'm missing to properly configure a simulation with anisotropic material?

Thanks in advance for the help!

[brown]

I suspect that this is because the grid from your LF simulation does not match the grid that you use in your isotropic and anisotropic simulations.

The isotropic simulation runs fine because it does not use your cache file.

The anisotropic simulation has stored those conductivity values expecting a specific grid.

Try right clicking on the grid settings folder in the simulation from which you are creating your anisotropy tensor, select "Copy Grid Configuration", then "Paste Grid Configuration" on the anisotropic simulation.

If you want to include features in your anisotropic simulation that you don't don't want to have simulated in your initial LF simulation, you can still include include objects in your initial simulation so that they are considered for the gridding without assigning them material properties, using them as a boundary condition or voxeling them. Just drag the object directly into the grid settings folder. That way your grid can always match.