February 15, 2023 at 10:55 pm
Amrita Pati
Ansys Employee

Hello,

FDTD doesn’t support triangular mesh, it uses rectilinear mesh.

DGTD, on the other hand uses triangular mesh in 2D and tetrahedral mesh in 3D. The similarities and differences between FDTD and DGTD can be found in the video linked below:
https://optics.ansys.com/hc/en-us/articles/360045467353-Introduction-to-DGTD-DGTD-Solver-Physics-DGTD-Vs-FDTD

Fore more information on DGTD, please visit the following page:
https://optics.ansys.com/hc/en-us/articles/360037744173

 

Thank you.