I'm working on a building with a double facade around it. There is an extract fan placed at the top of this facade to extract air based on the temperature or humidity within the facade (the sensors read the conditions entering/exiting the topmost facade section and control this extract).
Apart from the bottom and top sections of the facade, the double skin is almost completely open, with openings to adjacent double facade sections - meaning Macroflow can do its thing to make sure air entering the grille at the bottom should make its way to the extract at the top.
I'm having trouble getting this system to work and the only way I've found that comes close is to consider each face of the double facade as a column of air, with a vertical air pathway (entering at the bottom, zero-flow in-between each sequential vertical space open to each other, and a controlled extract at the top); however, testing this shows that simulation time increases by a factor of 3 on top of a run without any HVAC input due to its complexity (and this is on a 16 zone test version of the facade - not the 100 zone version it will be applied to later!).
Here's an image of the test version that might help describe this better:
Does anyone have any suggestions about how best to model this kind of thing? I don't need pinpoint accuracy, just enough to get an appreciable understanding of the double facades internal temperatures for its effect on the building within.