In this study, experimental and numerical analyses of natural convection in a quadrantal cavity heated and cooled on adjacent walls have been made to examine heat and fluid flow. Experimental studies involve the use of the particle tracing method that enables us to visualize the flow pattern in the enclosure. Numerical solutions are obtained using a commercial computational fluid dynamics package, FLUENT, using the finite volume method. Water is used as the working fluid. Effects of the Rayleigh number, Ra, on the Nusselt number, Nu, as well as velocity and temperature fields are investigated for the range of Ra from to . A new approach is suggested to overcome the singularity at the corner joining the differentially heated isothermal walls when determining Nu. This novel approach is justified through the purely analytical conduction solution. The experimental and numerical results are shown to agree fairly well. Finally, a correlation for Nu is developed.
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Research Papers
Natural Convection in a Quadrantal Cavity Heated and Cooled on Adjacent Walls
Orhan Aydin,
Orhan Aydin
Department of Mechanical Engineering,
e-mail: oaydin@ktu.edu.tr
Karadeniz Technical University
, 61080 Trabzon, Turkey
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Gurkan Yesiloz
Gurkan Yesiloz
Department of Mechanical Engineering,
Karadeniz Technical University
, 61080 Trabzon, Turkey
Search for other works by this author on:
Orhan Aydin
Department of Mechanical Engineering,
Karadeniz Technical University
, 61080 Trabzon, Turkeye-mail: oaydin@ktu.edu.tr
Gurkan Yesiloz
Department of Mechanical Engineering,
Karadeniz Technical University
, 61080 Trabzon, TurkeyJ. Heat Transfer. May 2011, 133(5): 052501 (7 pages)
Published Online: February 1, 2011
Article history
Received:
March 1, 2010
Revised:
September 23, 2010
Online:
February 1, 2011
Published:
February 1, 2011
Citation
Aydin, O., and Yesiloz, G. (February 1, 2011). "Natural Convection in a Quadrantal Cavity Heated and Cooled on Adjacent Walls." ASME. J. Heat Transfer. May 2011; 133(5): 052501. https://doi.org/10.1115/1.4003044
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