Hello everyone,
I am a new Radiance user, and I am currently conducting daylight simulations to analyze the impact of trees on illuminance levels in an indoor setting. However, I am facing an issue where the illuminance values remain nearly the same when using two different tree modeling approaches, despite both having the same material properties.
Here are the details of my workflow:
Model & Scene: The study involves comparing two tree representations— simple sphere-based trees and voxel-based trees using photogrammetry —to assess their influence on illuminance values at various points. The trees are modeled with the same material properties (e.g., reflectance, transmittance).
Radiance Parameters: I have used -I -h -ab 7 -ad 2048 -aa 0.1 -ar 128 -as 32 for the simulations.
Illuminance Results: The measured field data and the corresponding simulated values using both tree models in the figure.
Issue: I expected a noticeable difference in the illuminance values between the two tree models due to their structural differences, but the results are quite similar. I am unsure whether this is due to how Radiance handles tree geometry, my material definitions, or potential issues in my simulation settings.
Could anyone provide insights into why this might be happening and suggest possible troubleshooting steps? Any help would be greatly appreciated!
Thank you!
Best,
kodi