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THERMAL RADIATION EFFECTS ON MAGNETOHYDRODYNAMIC HEAT AND MASS TRANSFER FROM A HORIZONTAL CYLINDER IN A VARIABLE POROSITY REGIME

Volume 15, Issue 3, 2012, pp. 261-281
DOI: 10.1615/JPorMedia.v15.i3.50
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ABSTRACT

A mathematical model is presented for multiphysical transport of an optically dense, electrically conducting fluid along an isothermal horizontal circular cylinder embedded in a variable-porosity medium. A constant, static, magnetic field is applied transverse to the cylinder surface. The non-Darcy effects are simulated via the second-order Forchheimer drag force term in the momentum boundary layer equation. The cylinder surface is maintained at a constant temperature and concentration. The boundary layer conservation equations, which are parabolic in nature, are normalized into non-similar form and then solved numerically with the well-tested, efficient, implicit, stable Keller-box finite-difference scheme. The increasing magnetohydrodynamic body force parameter (Μ) is found to decelerate the flow. Increasing porosity (ε) is found to elevate velocities (i.e., accelerate the flow but decrease temperatures; cool the boundary layer regime). Increasing the Forchheimer inertial drag parameter (Λ) retards the flow considerably but enhances temperatures. Increasing the Darcy number accelerates the flow due to a corresponding rise in permeability of the regime and concomitant decrease in Darcian impedance. Thermal radiation is seen to reduce both velocity and temperature in the boundary layer. The local Nusselt number is also found to be enhanced with increasing both porosity and radiation parameters.

CITED BY
  1. Subba Rao A., Ramachandra Prasad V., Bhaskar Reddy N., Anwar Bég O., Heat Transfer in a Casson Rheological Fluid from a Semi-infinite Vertical Plate with Partial Slip, Heat Transfer-Asian Research, 44, 3, 2015. Crossref

  2. Rana Puneet, Bhargava R, Anwar Bég O, Finite element modeling of conjugate mixed convection flow of Al2O3–water nanofluid from an inclined slender hollow cylinder, Physica Scripta, 87, 5, 2013. Crossref

  3. Ramachandra Prasad V., Abdul Gaffar S., Keshava Reddy E., Anwar Bég O., Krishnaiah S., A Mathematical Study for Laminar Boundary-Layer Flow, Heat, and Mass Transfer of a Jeffrey Non-Newtonian Fluid Past a Vertical Porous Plate, Heat Transfer-Asian Research, 44, 3, 2015. Crossref

  4. Prasad V. Ramachandra, Abdul Gaffar S., Keshava Reddy E., Bég O. Anwar, Numerical study of non-Newtonian Jeffreys fluid from a permeable horizontal isothermal cylinder in non-Darcy porous medium, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 37, 6, 2015. Crossref

  5. Prasad V. Ramachandra, Gaffar S. Abdul, Reddy E. Keshava, Bég O. Anwar, Numerical Study of Non-Newtonian Boundary Layer Flow of Jeffreys Fluid Past a Vertical Porous Plate in a Non-Darcy Porous Medium, International Journal for Computational Methods in Engineering Science and Mechanics, 15, 4, 2014. Crossref

  6. Uddin Md. Jashim, Bég O. Anwar, Khan W. A., Ismail Ahmad Izani, Effect of Newtonian Heating and Thermal Radiation on Heat and Mass Transfer of Nanofluids over a Stretching Sheet in Porous Media, Heat Transfer-Asian Research, 44, 8, 2015. Crossref

  7. Rao A. Subba, Prasad V. R., Nagendra N., Murthy K. V. N., Reddy N. Bhaskar, Beg O. Anwar, Numerical Modeling of Non-Similar Mixed Convection Heat Transfer over a Stretching Surface with Slip Conditions, World Journal of Mechanics, 05, 06, 2015. Crossref

  8. Prasad V Ramachandra, Rao A Subba, Reddy N Bhaskar, Vasu B, Bég O Anwar, Modelling laminar transport phenomena in a Casson rheological fluid from a horizontal circular cylinder with partial slip, Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 227, 4, 2013. Crossref

  9. Gupta Diksha, Kumar Lokendra, Bég O. Anwar, Singh Bani, Numerical study of steady dissipative mixed convection optically-thick micropolar flow with thermal radiation effects, 1897, 2017. Crossref

  10. Nield Donald A., Bejan Adrian, Double-Diffusive Convection, in Convection in Porous Media, 2017. Crossref

  11. Tlau Lalrinpuia, Ontela Surender, Mixed convection nanofluid flow in a non-Darcy porous medium with variable permeability: entropy generation analysis, Indian Journal of Physics, 95, 10, 2021. Crossref

  12. Shamshuddin MD., Mabood Fazle, Bég O. Anwar, THERMOMAGNETIC REACTIVE ETHYLENE GLYCOL-METALLIC NANOFLUID TRANSPORT FROM A CONVECTIVELY HEATED POROUS SURFACE WITH OHMIC DISSIPATION, HEAT SOURCE, THERMOPHORESIS AND BROWNIAN MOTION EFFECTS, International Journal of Modelling and Simulation, 42, 5, 2022. Crossref

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