Experimental and Theoretical Study of Natural Convection Heat Transfer between Two Inclined Concentric Cylinders Filled with Porous Media

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Abeed M. Ali

Abstract

Porous media have considerable importance in improvement of heat transfer and storage. This research includes an experimental and theoretical study of transient and steady state natural convection heat transfer between two inclined concentric cylinders filled with a porous medium, under condition of applying uniform heat flux on the inner cylinder and constant outer surface temperature for the outer cylinder. Glass beads was used as porous medium , the study shows that the heat dissipated ability in the inner cylinder is function of Rayligh number , and the Nusselt number increase is directly proportional with the increase in Rayligh number in the steady state .
Fluent program was used to show the heat dissipation and the flow lines inside the gap between the two cylinders in the horizontal and inclined situation, the experimental results show that the nature of the heat distribution depends greatly on Rayligh number, and the angle of inclination of the cylinders. An experimental relationship between Nu&Ra was obtained under the study conditions

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References

المتيوتي، عطا لله حسين جاسم، دراسة نظرية وعملية للحمل ألقسري الطباقي خلال أنبوب أفقي مملوء بوسط مسامي مشبع.، أطروحة ماجستير، كلية الهندسة، جامعة تكريت ،2001.

Wang,B.X. and Zhang,X., Numerical and Experimental Investigations on The Transient and Steady-state Natural convection in a Vertical Liquid Saturated Porous Annulus. In heat transfer science and technology 1988, pp.417-423, Hemisphere, New York.

Wang,B.X. and Zhang,X., Transient Natural convection in a Horizontal Liquid- Saturated Porous-Media Annulus. Chinese J. of engng thermophyse. Vol 10, no.3, pp 287-292, 1989.

Wang,B.X. and Zhang,X., Natural convection in Liquid-Saturated Porous Media Between concentric Inclined c Inter. J. of Heat and mass transfer, Vol 33, no.5, pp 827-833, 1990. DOI: https://doi.org/10.1016/0017-9310(90)90066-4

Braga, E.J. and Lemos.J.S, Simulation of Turbulent Natural convection in a Porous cylindrical Annulus Using a Macroscopic Two-Equation Model. Inter. J. of Heat and mass transfer, Vol 49, pp 4340-4351, 2006. DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2006.04.032

هرمز، جورج دانيال مطلوب ، “تأثير الحاجز على انتقال الحرارة بالحمل الطبيعي في وسط مسامي بين اسطوانتين أفقيتين متحدتي المركز – دراسة عددية” . أطروحة ماجستير، كلية الهندسة، جامعة الموصل ،2000

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