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Technical Brief

Comparative Study Between Experimental Data and Numerical Results of Turbulent Mixed Convection in a Ventilated Cavity

[+] Author and Article Information
Norma A. Rodríguez, J. F. Hinojosa

Department of Chemical Engineering and Metallurgy,
University of Sonora,
Boulevard Rosales y Luis Encinas,
Hermosillo, Sonora CP 83000, Mexico
e-mail: fhinojosa@iq.uson.mx

J. Xamán

National Center of Research and Technological Development,
CENIDET--TecNM-SEP
Prol. Av. Palmira S/N. Col. Palmira,
Cuernavaca, Morelos CP 62490, Mexico
e-mail: jxaman@cenidet.edu.mx

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received October 1, 2013; final manuscript received January 14, 2015; published online February 10, 2015. Assoc. Editor: William P. Klinzing.

J. Heat Transfer 137(5), 054501 (May 01, 2015) (5 pages) Paper No: HT-13-1522; doi: 10.1115/1.4029646 History: Received October 01, 2013; Revised January 14, 2015; Online February 10, 2015

Experimental and numerical results of heat transfer by mixed convection in a ventilated cavity are presented. The results were obtained for a 1.0 m × 1.0 m × 1.0 m cavity. The inlet and outlet dimensions were of 0.08 m × 0.08 m, and the air velocity at the inlet was set to 0.1 and 0.5 m/s. The left wall receives a uniform and constant heat flux whereas the right wall was maintained at a constant temperature. Experimental and numerical results of temperature profiles and heat transfer coefficients are presented and compared. The results showed that the variation of the Rayleigh number increases about 1% the percentage differences between experimental and numerical values, and the maximum percentage differences on heat transfer coefficients are 2.0% for Ra = 2.7 × 108 and 3.0% for Ra = 4.5 × 108.

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Figures

Grahic Jump Location
Fig. 1

Physical model of the ventilated cavity

Grahic Jump Location
Fig. 2

Effect of Rayleigh number on experimental temperature profiles at different heights of the cavity for Re = 31,466

Grahic Jump Location
Fig. 3

Effect of Reynolds number on experimental temperature profiles at different heights of the cavity for Ra = 4.50 × 108

Grahic Jump Location
Fig. 4

Experimental and numerical profile comparison for Re = 31,466 and Ra = 4.50 × 108

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