Learning Forum

[Jungui Zhou]

Hi all,

I am trying to simulate the steady state heat of core-shell nanoparticles with Ansys Lumerical  2023 R1.1 Finite Element IDE. I can not deal with an error at the Meshing stage. It shows that "there was an unknown parallel error. The error code is 9010, the process number is 0" and "there was an unknown parallel error. The error code is 108, the process number is 0".

Does anyone have experience in dealing with this error?

Thank you so much.

Jungui

[Guilin Sun]

This is a common error. Please refer to this article and see if it helps  https://optics.ansys.com/hc/en-us/articles/8355464963987

If there is curved surface on a flat surface, you may move a little bit so they cut not are simply tangential.

Sometimes it can be version issue. Please upgrade to the newest version.

Or you may need to rebuild the simulation file.

Do not use too small the mesh size.

If problems still exist, please give some screenshots for the settings and geometries.

 

[Jungui Zhou]

Dear Dr. Sun,

Thanks for your helpful and prompt reply.  Following your suggestion, the simulation can be meshed now, but it is still not converged. Also, the geometry of imported heat source (absorption simulated by FDTD) is changed. For 7 close packed core-shell nanoparticles, the diameter is 5 nm, the thickness of shell is about 2 nm. Could you please help me look about this? Thank you so much.

Best regards,

Jungui

[Jungui Zhou]

Dear Dr. Sun,

Thanks so much for your prompt reply. As I followed you suggestion, the simulation can mesh now, but it can not converge. And also when I import the Heat source (absorption simulated by FDTD), the geometry is changed a little bit. For seven close packed core-shell nanoparticles, the diameter of core is 5nm, thickness of shell is 2nm. Please help me look about this.

Thank you so much.

Best regards,

Jungui

[Guilin Sun]

As the message says, the mesh volume is too small, ~5e-44m^3. The curved surfaces causes meshing issue and the element volume is too small since your structure is very small. You may still need adjust the mesh, modify the solver error tolerance, limits etc.  When it does not converge, the limits should be increased.

As far as I know from some literature, the thermal properties of a material change significantly from bulk to nano scale. They can be 30% of the bulk values at nano scale.