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Bifurcation to oscillatory flow of the natural convection around a vertical channel in rectangular enclosure

J.P. Liu, W.Q. Tao

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 1 March 1999

344

Abstract

Numerical computations were performed for the heat transfer and fluid flow characteristics of natural convection with an internal vertical channel composed by a pair of parallel plates in a rectangular enclosure. The inner plates and the bounding wall of the enclosure were maintained at uniform but different temperatures. The plates were symmetrically arranged. Unsteady computation was performed to simulate the evolution process of the natural convection developing from the zero initial field. The cases of Ra = 2 × 104, 2 × 105 and 106 were studied. A symmetrical steady solution was achieved for the case of Ra = 2 × 104. For Ra = 2 × 105 and 106, time dependent asymmetrical processes were observed. The flow oscillating process seemed to be more complex at Ra = 2 × 105 than that at Ra = 106, which is quasi‐periodic with two frequencies.

Keywords

Citation

Liu, J.P. and Tao, W.Q. (1999), "Bifurcation to oscillatory flow of the natural convection around a vertical channel in rectangular enclosure", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 9 No. 2, pp. 170-185. https://doi.org/10.1108/09615539910256027

Publisher

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MCB UP Ltd

Copyright © 1999, MCB UP Limited

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