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Ansys Learning Forum › Forums › Discuss Simulation › Photonics › Two cases in the case base have different brdf calculation results. › Reply To: Two cases in the case base have different brdf calculation results.

July 11, 2024 at 3:46 pm
jie li
Subscriber

Yes, I downloaded both examples to calculate the BRDF of the surface, and I found that both  have the same geometric modeling method. I tried to use the same parameters to simulation, but the BRDF results were wildly different.  

I only changed the roughness to 0. and then the grid accuracy was reduced to level 1, the scanning azimuth was changed to 0 , and the index is3.84 (Si) ,  and the simulation results were as follows. the first come from "Bidirectional_scattering_distribution_function_(BSDF)"

The second figure from "Diffuse Scattering Film for Automotive Display", which has the same simulation parameters as the first, i got the result by clicking "run", and running the analysis script.