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多孔介质期刊
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ISSN 打印: 1091-028X
ISSN 在线: 1934-0508

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多孔介质期刊

DOI: 10.1615/JPorMedia.2020034298
pages 851-864

NATURAL CONVECTION IN A TRAPEZOIDAL POROUS FILLED CAVITY WITH A FLEXIBLE WALL

Bader Alshuraiaan
Mechanical Engineering Department, College of Engineering and Petroleum, Kuwait University, PO Box 5969, Safat 13060, Kuwait

ABSTRACT

Laminar free convection in a trapezoidal cavity containing porous media is analyzed in this study for various relevant variables such as Rayleigh number, angle of the side inclined wall, and thermal conductivity using fluid-structure interaction. Two configurations of trapezoidal enclosure were analyzed in this investigation to compare flow and heat transfer characteristics between the rigid and flexible wall models. The results of this study show that heat transfer is enhanced with an increase in the Rayleigh number for both arrangements. However, the second configuration exhibited higher average Nusselt number than the first configuration. Further, heat transfer improvement is found to reduce with increasing the angle of the inclined wall for the second configuration. The results indicated that the presence of a flexible wall results in heat transfer improvement when compared to the model of rigid walls of the trapezoidal cavity; therefore, it is recommended to use flexible wall models in thermal management applications.

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