On the Use of Downdraft Spoilers in Glazed Atria

The effect of downdraft spoilers is questioned.CFD results are presented for a large atriumequipped with downdraft spoilers ("obstacles")to counteract downdraft from glazed faqades.Simulations are in addition presented for oneandtwo-story test rooms, where aspects of theefficiency of downdraft spoilers are investigated.Among conclusions are that the spatial thermalbalance of rooms, e.g. stratification or otherbuoyancy driven flows, are essential to thedowndraft, more so, than downdraft spoilers.