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RESEARCH PAPERS: Natural and Mixed Convection

Development of Multicellular Solutions in Natural Convection in an Air-Filled Vertical Cavity

[+] Author and Article Information
S. Wakitani

Department of Mechanical Engineering, College of Industrial Technology, 1-27-1 Nishikoya, Amagasaki 661, JAPAN

J. Heat Transfer 119(1), 97-101 (Feb 01, 1997) (5 pages) doi:10.1115/1.2824106 History: Received April 29, 1996; Revised September 13, 1996; Online December 05, 2007

Abstract

Consideration is given to the multiple solutions of two-dimensional natural convection in a vertical air-filled tall cavity with differentially heated sidewalls. Numerical simulations are carried out for a wide range of Rayleigh numbers from the onset of the steady multicellular flow, through the reverse transition to the unicellular pattern, to the unsteady multicellular flow. The dependence of the flow structure on the initial condition is clarified from the simulations by means of starting from a motionless and isothermal state, and gradually increasing or decreasing the Rayleigh number.

Copyright © 1997 by The American Society of Mechanical Engineers
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