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Buoyancy-driven flow between two rooms coupled by two openings at different levels

Published online by Cambridge University Press:  14 December 2007

L. P. THOMAS ,
B. M. MARINO ,
R. TOVAR  and
P. F. LINDEN
L. P. THOMAS
Affiliation:
Instituto de Física Arroyo Seco, Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Pcia. de Buenos Aires, Pinto 399, B7000GHG Tandil, Argentina
B. M. MARINO
Affiliation:
Instituto de Física Arroyo Seco, Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Pcia. de Buenos Aires, Pinto 399, B7000GHG Tandil, Argentina
R. TOVAR
Affiliation:
Centro de Investigación en Energía UNAM, Apdo. Postal 34, Temixco Mor. 62580 México
P. F. LINDEN
Affiliation:
Department of Mechanical and Aerospace Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0411, USA
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Abstract

The stack-driven flow between two interconnected rooms produced by a single heat source is studied. In particular, the features of the transient flow for different positions and areas of two openings in the shared vertical wall are analysed. An analytical model provides the time evolution of the stratified flows in rooms of any size. The concept of an equivalent layer representing a non-uniform density profile, which is useful in other contexts, is included in the theoretical approach and provides physical insight and aids the mathematical solution of the problem. New salt-bath experiments are performed to simulate the thermal forcing between the rooms, to validate the model and to analyse the mixing generated and the effects of a source of volume in the configuration studied.

Type
Papers
Information
Journal of Fluid Mechanics , Volume 594 , 10 January 2008 , pp. 425 - 443
Copyright
Copyright © Cambridge University Press 2008

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