Publication de 18 numéros par an
ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561
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NATURAL CONVECTION HEAT TRANSFER IN A DIFFERENTIALLY HEATED ENCLOSURE WITH ADIABATIC PARTITIONS AND FILLED WITH A BINGHAM FLUID
RÉSUMÉ
The present numerical study deals with two-dimensional natural convection in a differentially heated square enclosure, with centrally located partitions and offset partitions. The cavity is considered to be completely filled with a yield fluid obeying the rheological model of Bingham. The governing equations were solved using a code based on the finite volume method. The code has been validated for both cases of a Newtonian and non-Newtonian fluid, after comparison between the present results and those given in the literature.
In order to investigate the effect of a set of parameters, i.e., the partitions height and thickness, on heat and flow behaviors, the Prandtl number is taken equal to 20, the Rayleigh number is fixed at 106, and the Bingham number covers the range from 0 to 20. The results show, on the one hand, that the average Nusselt number is a decreasing function of the Bingham number and that all parameters related to geometrical dimensions of partitions exert a crucial effect on the flow field and heat transfer, on the other hand. Moreover, it has been pointed out that the position of such partitions has an important effect on both fluid flow and heat transfer and that the partitions thickness enhanced heat transfer.
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Labsi Nabila, Benkahla Youb Khaled, Boutra Abdelkader, Titouah Meriem, Convection heat transfer inside a lid-driven cavity filled with a shear-thinning Herschel–Bulkley fluid, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 40, 3, 2018. Crossref
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Ragui Karim, Boutra Abdelkader, Benkahla Youb Khaled, Impact of Square Fuel Assemblies Arrangement on Fluid Flow and Heat Transfer Enhancement inside Water Filled Enclosures, International Letters of Chemistry, Physics and Astronomy, 64, 2016. Crossref
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Ragui Karim, Boutra Abdelkader, Bennacer Rachid, Khaled Benkahla Youb, Progress on numerical simulation of yield stress fluid flows (Part I): Correlating thermosolutal coefficients of Bingham plastics within a porous annulus of a circular shape, International Journal of Heat and Mass Transfer, 126, 2018. Crossref
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Ragui Karim, Boutra Abdelkader, Benkahla Youb Khaled, Impact of Square Fuel Assemblies Arrangement on Fluid Flow and Heat Transfer Enhancement inside Water Filled Enclosures, International Letters of Chemistry, Physics and Astronomy, 64, 2016. Crossref