Purcell factor examples:
https://optics.ansys.com/hc/en-us/articles/4412965836947-Purcell-factor-dipolepower-vs-transmission-box
https://optics.ansys.com/hc/en-us/articles/360042225934-OLED-2D
if it is layered structure, you can use analytical solution: stackpurcell – Script command
for thermal-optic simulation, please refer to
Thermally tuned waveguide (FDE)
Lithium Niobate Nonlinear Thermal Waveguide
Thermally tuned waveguide sensor
for the last question, you can either insert the structure inside the analysis group:
Metamaterial parameter extraction – Smith
or you will need to pass structure variable to “model”, and the “model” passes the same variable to the analysis group. It is better to have the structure inside the analysis group.
For further questions, please write new post, as the forum policy is one question one post, so to target one question with one solution.