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Significances of Bioengineering & Biosciences

Impact of Space-Dependent Thermal Conductivity on Heat Transfer in a Vertical Annulus with Asymmetric Surface Heating

Submission: September 10, 2020;Published: October 22, 2020

DOI: 10.31031/SBB.2020.04.000578

ISSN 2637-8078
Volume 4 Issue 1


This technical brief investigates the impact of space dependent thermal conductivity on temperature distributions and rate of heat transfer of some fluids in a porous annulus. The heat transport equation is derived with a linear thermal conductivity model. Exact solution of the energy equation is obtained after using suitable dimensionless parameters. Results indicate that increase in coefficient of thermal conductivity leads to a corresponding increase in fluid temperature as well as Nusselt number. In addition, fluids with higher Prandtl number are found to be a good insulators.

Keywords: Space-dependent; Thermal conductivity; Vertical annulus; Asymmetric heating; Prandtl number; Nusselt number

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