Learning Forum

[Mariah Ha]

Hi, 

I am using Charge solver to simulate a pin diode. I would like to use two mesh constraints , one for the p-doped layer , and one for the n-doped layer. However, Charge always takes into account only the first mesh constraint that comes first in order in the objects tree and ignores the second. Why is this happening? normally Charge allows the use of many mesh contraints as stated in the documentation.Could you please test that and explain the raison of this issue. I am using the latest version of Lumerical 2023 R2.2.

Thanks.

[Dev]

Hello,

Is there any error message?

I think this video will help you : Simulation Objects - Geometry Setup Tips - Mesh Order – Ansys Optics

Regards

Devika

[Mariah Ha]

Thank you. However, I am talking about mesh constraints not mesh order. I am using the same mesh order to all the materials so i do not have an issue of priority. The problem is the mesh constraints are not all applied , only the first one. 

[Dev]

Hello, Thank you for clarification. 

Have you tried restarting Ansys lumerical software or better restarting computer and run the simulation again? 

 

[Mariah Ha]

yes i did 

[Dev]

I think the issue is with max refiled step. Try increasing the max refined step.

"It is important to note that during the meshing process, if the meshing algorithm reaches
the value set by the “max refine steps” and the target level of refinement specified
by the global and local mesh constraints has not been achieved yet, the mesh refinement
will stop and the resulting mesh may not be adequately refined.
It is recommended to increase the number of max refine steps as you change the mesh constraints
toward a more refined mesh"