Open Access

ARTICLE

Mixed Convection and Heat Transfer in a “T” Form Cavity: The Effect of Inclination

M’barka Mourabit¹, Hicham Rouijaa¹, El Alami Semma¹, Mustapha El Alami², Mostafa Najam²

1 Laboratoire de Mécanique, Faculté des Sciences et Techniques, Université Hassan Ier, BP. 577Settat, Maroc.
2 Laboratoire LPMMAT, Département de Physique, Faculté des Sciences Aïn Chock, Université Hassan II Casablanca. BP. 5366 Maarif, Casablanca, Maroc.

Fluid Dynamics & Materials Processing 2014, 10(3), 395-415. https://doi.org/10.3970/fdmp.2014.010.395

Abstract

We study the effect of inclination angle on mixed convection in a "T" form cavity containing two openings and two heated blocks mounted on its lower wall. The blocks are maintained at a constant temperature T_H. The lower wall is adiabatic and submitted to a vertical air jet while the upper wall is kept cold at a constant temperature T_C < T_H. The vertical walls are rigid and adiabatic. The governing equations are solved by a finite volume method. Special attention is devoted to the solution symmetry, the flow structure and the heat exchange through the cavity. The considered control parameters are: the inclination angle 0° ≤ φ ≤ 90°, the Rayleigh number 10⁵ ≤ Ra ≤ 10⁶, the Reynolds number 100 ≤ Re ≤ 1000, the Prandtl number Pr=0.72, the height of the blocks B=0.5, the opening width C=0.15 and the distance between blocks D=0.5. The results are presented in terms of streamlines, isothermal lines and variations of Nusselt number with Re or φ.

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