AFMG Network Forum

SIarch · Member

Hello everyone,

Sorry if this issue has already been addressed, I've had no luck while searching the forums so far.
I am performing simulations on an interior whose ceiling is composed of two types of panels, corresponding to different materials with different absorption coefficients. The panels are approximately 50x50cm and arranged in rows which, for the purpose of the simulation, may be considered evenly distributed throughout the space.

The picture below approximates the layout of the panels (the actual room is significantly larger, about 30x10x5m, not perfectly regular in shape).

My question is: what is the best approach in modelling such a ceiling?
1. Modelling stripes of each material according the the actual layout (time consuming, and maybe prone to generate artefacts due to the increased amount of rims and edges).
2. Modelling a single surface and assign absorption coefficients derived as the average of the two actual sets.

Thank you in advance to anyone who will take time to answer and share insights.

luisgsf · Member

Probably someone more experienced than me might give you a better answer, but I would do the whole ceiling in one of the materials, and then do "polygons in face" of the other one)

If you are using only Eyring calculations it might not be different, but if you use AURA, Ray Tracing, etc., is important to have the material where is supposed to be.