The effects of Ohmic heating and viscous dissipation on unsteady MHD and slip flow over a porous rotating disk with variable properties in the presence of Hall and ion-slip currents

Emmanuel Osalusi, Jonathan Side, Robert Harris

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The effects of Ohmic heating and viscous dissipation on unsteady laminar magneto-hydrodynamics (MHD) flow of a viscous Newtonian and electrically conducting fluid over a rotating disk taken into account the variable fluid properties (density, (?), viscosity, (µ) and thermal conductivity, (?)) in the presence of Hall and ion-slip currents effects have been examined. These fluid properties are taken to be dependent on temperature. The unsteady Navier-Stokes equations along with the energy equation are reduced to a system of ordinary differential equations by using similarity transformations and the resulting equation system is solved numerically by using a shooting method. Results for the details of the velocity as well as temperature are shown graphically and the numerical values of the skin friction and the rate of heat transfer are entered in tables. © 2007 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1017-1029
Number of pages13
JournalInternational Communications in Heat and Mass Transfer
Volume34
Issue number9-10
DOIs
Publication statusPublished - Nov 2007

Keywords

  • Ohmic heating
  • Rotating disk
  • Shooting method
  • Viscous dissipation

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