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Convective Mixed Heat Transfer in a Square Cavity with Heated Rectangular Blocks and Submitted to a Vertical Forced Flow

Ahmed Meskini, Mostafa Najam, Mustapha El Alami

Fluid Dynamics & Materials Processing 2011, 7(1), 97-110. https://doi.org/10.3970/fdmp.2011.007.097

Abstract

A numerical mixed convection investigation was carried out to study the enhancement of heat transfer in a square cavity with identical heated rectangular blocks adjacent to its upper wall, and submitted to a vertical jet of fresh air from below. The configuration so defined is an inverted "T"-shaped cavity presenting symmetry with respect to a vertical axis passing by the middle of the openings. The governing equations have been solved using the finite difference method. The parameters of this study are: Rayleigh number 104 ≤ Ra ≤ 106, Reynolds number 1 ≤ Re ≤ 1000, the opening width C=0.15, the height of blocks B=1/4, 1/2 and 3/4. The non-dimensional space between blocks and geometric parameter of the cavity are kept constant (D=0.5 and A=1). The results obtained, with Pr=0.72, show the validity of different solutions, when varying Re, Ra and B, on which the resulting heat transfer depends. Some useful correlations are also proposed.

Keywords

Heat transfer, Vertical jet, Rectangular blocks, component cooling, numerical simulation, inverted T form cavity.

Cite This Article

Meskini, A., Najam, M., Alami, M. E. (2011). Convective Mixed Heat Transfer in a Square Cavity with Heated Rectangular Blocks and Submitted to a Vertical Forced Flow. FDMP-Fluid Dynamics & Materials Processing, 7(1), 97–110.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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