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

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


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
Issue number1
Publication statusPublished - Oct 11 2016
EventInternational Conference on Advances in Materials and Manufacturing Applications, IConAMMA 2016 - Bangalore, India
Duration: Jul 14 2016Jul 16 2016


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

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)


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