Mixed Convection Opposing Flow in a Vertical Porous Annulus-Two Temperature Model

Abdullah A.Aa Al-Rashed, N. J. Salman Ahmed, H. M.T. Khaleed, T. M.Yunus Khan, K. S. NazimAhamed

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The opposing flow in a porous medium refers to a condition when the forcing velocity flows in opposite direction to thermal buoyancy obstructing the buoyant force. The present research refers to the effect of opposing flow in a vertical porous annulus embedded with fluid saturated porous medium. The thermal non-equilibrium approach with Darcy modal is considered. The boundary conditions are such that the inner radius is heated with constant temperature Tw the outer radius is maintained at constant temperature Tc. The coupled nonlinear partial differential equations such as momentum equation, energy equation for fluid and energy equation for solid are solved using the finite element method. The opposing flow variation of average Nusselt number with respect to radius ratio Rr, Aspect ratioAr and Radiation parameter Rd for different values of Peclet number Pe are investigated. It is found that the flow behavior is quite different from that of aiding flow.

Original languageEnglish
Article number012214
JournalIOP Conference Series: Materials Science and Engineering
Volume149
Issue number1
DOIs
Publication statusPublished - Oct 11 2016

Keywords

  • Finite Element Method
  • Mixed convection
  • Porous medium
  • Thermal non-equilibrium

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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