Difficults on modeling a non-refrigirated warehouse

Hello my friends!

I'm trying to model a big warehouse on OpenStudio/Sketch-Up, but I'm really new on that, so there are some doubts that I think you could help me.

My natural ventilation system need to be composed of a loop that the cooling air infiltrate the zone between a metal grid on the side walls, and the heated air be exhausted by non-eletric exhaust fans on the ceilling, but I don't know how to put a non-eletric exhaust element in the model, even the infiltration by metal grids.
My design project has 46,000 m², and a 14 meters floor-to-celling distance. Despite the size, I made just one big thermal zone, I'm wondering if I don't need to divide this thermal zone to get a better accuratted result.
To the logistic acess, my design has almost 80 overhead sectional doors, but when I model then on SketchUp and send it to the OSM, when I try seeing the geometry, the program crashes (I think that maybe there is to much infos to process, but for me if the program could run well, I don't need to see the 3d, I only need to sure it).

Thank you!!

Answers below match to your bullets

I would use the natural ventilation option in EnergyPlus's Zone Ventilation Design Flow Rate object
You generally will at least want to add core and perimeter zoning, but may add more to represent different conditions in different areas or to break up very large spaces to represent different zone temperatures.
If your can run EnergyPlus and see the sub-surfaces there, it is probably fine, but it should not be crashing in the 3d view in the OpenStudio Application. If you send the model to openstudio@nrel.gov we can try to replicate the crash and identify the issue with our 3d viewer.

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