I am a university student, I am using your program for a project and I need to know the calculation methodology or formulas that the program uses to calculate. In advance, I would appreciate your help, thank you.
The methodology is based on discretizing everything into small grid cells and dividing time into small steps and then integrate the whole thing based on physics. In the case of solar simulation, it is geometric optics. In the case of building energy, it is heat transfer.