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Sadhana

, 15:1 | Cite as

A review of free, forced and mixed convection in a saturated porous annulus

  • K Muralidhar
Article
  • 55 Downloads

Abstract

A computational study of heat transfer in a liquid-saturated porous annulus with a heated inner wall and a cold outer wall is reported here. Results are presented for heat transfer rates from the inner cylinder for a wide range of parameters which characterize free, forced and mixed convective regimes of flow. Both horizontal and vertical annulii are included in the study. Heat transfer results have also been obtained from a non-Darcy model for flow and these are compared to the Darcy solutions. Non-Darcy effects are taken to arise from inertial and viscous effects in the fluid phase and the variation of porosity near the solid wall. The approach of heat transfer results of an annulus with a large radius ratio towards those of an isolated circular cylinder is discussed. Limited data on transient convection is also presented in this work.

Keywords

Free, forced and mixed convection heat transfer Darcy and non-Darcy models saturated porous annulus numerical solution 

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Copyright information

© Indian Academy of Sciences 1984

Authors and Affiliations

  • K Muralidhar
    • 1
  1. 1.Department of Mechanical EngineeringIndian Institute of TechnologyKanpurIndia

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