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How to model "stack effect" by airpak

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Old   November 6, 2009, 16:44
Default How to model "stack effect" by airpak
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Lutao Wang
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Does anyone know how to simulate “stack effect” in double-skin façade by airpak. My case model is very simple, just a cube with two openings on the top and button. I set the wall as transparent, with heat flux 700w/m2, Temperature 80 F, no wind velocity on the opening. I wnna see how air flow just depend on stack effect. But convergence is a big problem. Can anyone tell me how to set the case?

Thank you so much!
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