I have created two identical room models in both Radiance and Dialux in order to simulate a clear sky condition. Both models have two ceiling-high daylight openings with glazing in the corners of the façade. I have compared the illuminance result and it seems the sun position in both software is different. For your information, both models have the same date, time and location. Can you help me to find out why the sun position is different in both models?
It is according to the resolution of your time step.
As i recall LB Legacy has this shift and LB[+] doesn’t (is just a programming thing].
You need to adjust either of both softwares you are using to compare fairly.
-A.
While comparing illuminanace values using Dialux and Radiance (with an overcast sky), I am experiencing lower values for Dialux on a set of grid points. Did you have experience with such a situation?