Opposing flow in square porous annulus: Influence of Dufour effect

Journal Article · Tue Jun 21 04:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4954867· OSTI ID:22609139

Athani, Abdulgaphur ^[1]; Khaleed, H. M. T., ^[2]

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1. Dept. of Mechanical Engineering, Anjuman Institute of Technology & Management, Bhatkal (India)
2. Dept of Mechanical Engineering, Faculty of Engineering, Islamic University, Madinah Munawwarra (Saudi Arabia)

Heat and mass transfer in porous medium is very important area of research which is also termed as double diffusive convection or thermo-solutal convection. The buoyancy ratio which is the ratio of thermal to concentration buoyancy can have negative values thus leading to opposing flow. This article is aimed to study the influence of Dufour effect on the opposing flow in a square porous annulus. The partial differential equations that govern the heat and mass transfer behavior inside porous medium are solved using finite element method. A three node triangular element is used to divide the porous domain into smaller elements. Results are presented with respect to geometric and physical parameters such as duct diameter ratio, Rayleigh number, radiation parameter etc. It is found that the heat transfer increase with increase in Rayleigh number and radiation parameter. It is observed that Dufour coefficient has more influence on velocity profile.

• OSTI ID: 22609139
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1751; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONCENTRATION RATIO
CONVECTION
FINITE ELEMENT METHOD
HEAT
HEAT TRANSFER
MASS TRANSFER
PARTIAL DIFFERENTIAL EQUATIONS
POROUS MATERIALS
RAYLEIGH NUMBER
VELOCITY