Buoyancy-Driven Flow in a Two-Story Compartment
Publication: Journal of Engineering Mechanics
Volume 135, Issue 7
Abstract
In this study we develop a theoretical model for the buoyancy-driven flow in a two-story compartment. In particular, the influence of the vent area and the upper story height on the evolution of the “first front” is presented. We note that the steady-state thickness of the buoyant fluid accumulated on the ceiling in the lower story and the filling time for the upper story decrease as the vent area increases. Before the upper story is fully filled, the flow may become “stack driven” by the buoyant fluid in the upper story. For sufficiently high upper story and large vent area, the buoyant fluid in the lower story can be completely drained. The upper story serves as a “buffer zone” which helps to reduce the accumulated buoyant fluid in the lower story.
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© 2009 ASCE.
History
Received: Jul 1, 2008
Accepted: Jan 19, 2009
Published online: Jun 15, 2009
Published in print: Jul 2009
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