Convective heat transfer in axisymmetric porous bodies

Rajesh Rajamani, C. Srinivas, P. Nithiarasu, K. N. Seetharamu

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

A finite element method employing Galerkin's approach is developed to analyze free convection heat transfer in axisymmetric fluid saturated porous bodies. The method is used to study the effect of aspect ratio and radius ratio on Nusselt number in the case of a proous cylindrical annulus. Two cases of isothermal and convective boundary conditions are considered. The Nusselt number is always found to increase with radius ratio and Rayleigh number. It exhibits a maximum when the aspect ratio is around unity; maximum shifts towards lesser aspect ratios as Rayleigh number increases. Results are compared with those in the literature, wherever available, and the agreement is found to be good.

Original languageEnglish (US)
Pages (from-to)829-837
Number of pages9
JournalInternational Journal of Numerical Methods for Heat & Fluid Flow
Volume5
Issue number9
DOIs
StatePublished - Sep 1 1995

Keywords

  • Cylindrical annulus
  • Heat transfer
  • Porous bodies

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