Effect Of Eccentricity On Conjugate Natural Convection In Vertical Eccentric Annuli

• Main Authors: A. Jamal, M. A. I. El-Shaarawi, E. M. A. Mokheimer
• Format: Text
• Language: English
• Published: Zenodo 2013
• Subjects: Conjugate natural convection; eccentricity; heat transfer; vertical eccentric annuli.; Lundberg; sami
• Online Access: https://dx.doi.org/10.5281/zenodo.1083600; https://zenodo.org/record/1083600

Combined conduction-free convection heat transfer in vertical eccentric annuli is numerically investigated using a finitedifference technique. Numerical results, representing the heat transfer parameters such as annulus walls temperature, heat flux, and heat absorbed in the developing region of the annulus, are presented for a Newtonian fluid of Prandtl number 0.7, fluid-annulus radius ratio 0.5, solid-fluid thermal conductivity ratio 10, inner and outer wall dimensionless thicknesses 0.1 and 0.2, respectively, and dimensionless eccentricities 0.1, 0.3, 0.5, and 0.7. The annulus walls are subjected to thermal boundary conditions, which are obtained by heating one wall isothermally whereas keeping the other wall at inlet fluid temperature. In the present paper, the annulus heights required to achieve thermal full development for prescribed eccentricities are obtained. 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