Scaling down a building

faisal_durr · July 5, 2011, 06:44

Hello guys,
I am looking at using LES to model natural ventilation inside a building. I am supposed to model a building with occupants. Obviously i can not model the building with the same dimensions. I am thinking of scaling down the dimensions of the building. But dont know how to scale down the heat source (occupants). I mean initially the building has around 33W/m^2..... so if i scale down my building what should be the heat source then? Thank you, you experts out there.

PSYMN · July 6, 2011, 15:39

Why is it obvious that you can't model the building with the same dimensions?

Why must you scale it?

July 5, 2011, 06:44	Scaling down a building	#1
faisal_durr Member Faisal Durrani Join Date: Nov 2009 Location: England Posts: 62 Rep Power: 17	Hello guys, I am looking at using LES to model natural ventilation inside a building. I am supposed to model a building with occupants. Obviously i can not model the building with the same dimensions. I am thinking of scaling down the dimensions of the building. But dont know how to scale down the heat source (occupants). I mean initially the building has around 33W/m^2..... so if i scale down my building what should be the heat source then? Thank you, you experts out there.

July 6, 2011, 15:39	Why scale it?	#2
PSYMN Senior Member Simon Pereira Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 2,663 Blog Entries: 1 Rep Power: 47	Why is it obvious that you can't model the building with the same dimensions? Why must you scale it? __________________ ----------------------------------------- Please help guide development at ANSYS by filling in these surveys Public ANSYS ICEM CFD Users Survey This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)... CFD Online Users Survey

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