Mixed convection opposing flow in porous annulus

J. N. Salman Ahmed, Sarfaraz Kamangar, Abdullah A.A.A. Al-Rashed, T. M.Yunus Khan, H. M.T. Khaleed

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The current work investigates the mixed convection flow in a vertical porous annulus embedded with fluid saturated porous medium. The annulus is isothermally heated discretely at 20%, 35% and 50% of the height of cylinder at the center of annulus. Darcy law with thermal non-equilibrium approach is considered. The governing partial differential equations are solved using Finite Element Method (FEM). The effects of Peclet number Pe and conductivity ratio Kr on heat transfer and fluid flow is discussed It is found that the applied velocity in the downward direction, in case of an opposing flow, does not allow the thermal energy to reach from a hot to a cold surface.

Original languageEnglish
Title of host publicationInternational Conference of Numerical Analysis and Applied Mathematics 2015, ICNAAM 2015
PublisherAmerican Institute of Physics Inc.
Volume1738
ISBN (Electronic)9780735413924
DOIs
Publication statusPublished - Jun 8 2016
EventInternational Conference of Numerical Analysis and Applied Mathematics 2015, ICNAAM 2015 - Rhodes, Greece
Duration: Sep 23 2015Sep 29 2015

Other

OtherInternational Conference of Numerical Analysis and Applied Mathematics 2015, ICNAAM 2015
CountryGreece
CityRhodes
Period9/23/159/29/15

Fingerprint

annuli
convection
cold surfaces
Peclet number
thermal energy
partial differential equations
fluid flow
finite element method
heat transfer
conductivity
fluids

Keywords

  • Finite Element Method
  • Mixed convection
  • Opposing flow
  • Thermal non-equilibrium

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Salman Ahmed, J. N., Kamangar, S., Al-Rashed, A. A. A. A., Khan, T. M. Y., & Khaleed, H. M. T. (2016). Mixed convection opposing flow in porous annulus. In International Conference of Numerical Analysis and Applied Mathematics 2015, ICNAAM 2015 (Vol. 1738). [480139] American Institute of Physics Inc.. https://doi.org/10.1063/1.4952375

Mixed convection opposing flow in porous annulus. / Salman Ahmed, J. N.; Kamangar, Sarfaraz; Al-Rashed, Abdullah A.A.A.; Khan, T. M.Yunus; Khaleed, H. M.T.

International Conference of Numerical Analysis and Applied Mathematics 2015, ICNAAM 2015. Vol. 1738 American Institute of Physics Inc., 2016. 480139.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Salman Ahmed, JN, Kamangar, S, Al-Rashed, AAAA, Khan, TMY & Khaleed, HMT 2016, Mixed convection opposing flow in porous annulus. in International Conference of Numerical Analysis and Applied Mathematics 2015, ICNAAM 2015. vol. 1738, 480139, American Institute of Physics Inc., International Conference of Numerical Analysis and Applied Mathematics 2015, ICNAAM 2015, Rhodes, Greece, 9/23/15. https://doi.org/10.1063/1.4952375
Salman Ahmed JN, Kamangar S, Al-Rashed AAAA, Khan TMY, Khaleed HMT. Mixed convection opposing flow in porous annulus. In International Conference of Numerical Analysis and Applied Mathematics 2015, ICNAAM 2015. Vol. 1738. American Institute of Physics Inc. 2016. 480139 https://doi.org/10.1063/1.4952375
Salman Ahmed, J. N. ; Kamangar, Sarfaraz ; Al-Rashed, Abdullah A.A.A. ; Khan, T. M.Yunus ; Khaleed, H. M.T. / Mixed convection opposing flow in porous annulus. International Conference of Numerical Analysis and Applied Mathematics 2015, ICNAAM 2015. Vol. 1738 American Institute of Physics Inc., 2016.
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AB - The current work investigates the mixed convection flow in a vertical porous annulus embedded with fluid saturated porous medium. The annulus is isothermally heated discretely at 20%, 35% and 50% of the height of cylinder at the center of annulus. Darcy law with thermal non-equilibrium approach is considered. The governing partial differential equations are solved using Finite Element Method (FEM). The effects of Peclet number Pe and conductivity ratio Kr on heat transfer and fluid flow is discussed It is found that the applied velocity in the downward direction, in case of an opposing flow, does not allow the thermal energy to reach from a hot to a cold surface.

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