About the 3D charge simulation

- March 1, 2023 at 11:19 am
  
  HAOYU LIU
  Subscriber
  
  I want to test the photocurrent and bandwidth of my designed photodiode. When I use the charge part, the simulation is x from 0 to7μm
  y from 0 to 7μm, z from -2 to 2μm. When I run the simulation, the mesh state is Tessellating 5% for a very long time. My structure needs to do the 3D simulation and how to solve this problem?
- March 1, 2023 at 6:08 pm
  
  Guilin Sun
  Ansys Employee
  
  Tessellating is to mesh the geometry for simulation. It might be slow if the mesh size is small, the goeometry is small, and the simulation volume is large. If there is a long and thin layer, the meshing can be challenge as it needs small mesh size and many tetrahedral grids. I would suggest to use larger "min edge lenegth" and "max edge length" first. Then you can add a constraint mesh for the small geometry.You may also relax the triangle quality.
  - March 2, 2023 at 5:40 am
    
    HAOYU LIU
    Subscriber
    
    About relaxing the triangle quality, what does it means? And how to settting the constraint mesh for the whole simulation area?

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