The Effects of Thermal Radiation on an Unsteady MHD Axisymmetric Stagnation-Point Flow over a Shrinking Sheet in Presence of Temperature Dependent Thermal Conductivity with Navier Slip

PLoS One. 2015 Sep 28;10(9):e0138355. doi: 10.1371/journal.pone.0138355. eCollection 2015.

Abstract

In this paper, the magnetohydrodynamic (MHD) axisymmetric stagnation-point flow of an unsteady and electrically conducting incompressible viscous fluid in with temperature dependent thermal conductivity, thermal radiation and Navier slip is investigated. The flow is due to a shrinking surface that is shrunk axisymmetrically in its own plane with a linear velocity. The magnetic field is imposed normally to the sheet. The model equations that describe this fluid flow are solved by using the spectral relaxation method. Here, heat transfer processes are discussed for two different types of wall heating; (a) a prescribed surface temperature and (b) a prescribed surface heat flux. We discuss and evaluate how the various parameters affect the fluid flow, heat transfer and the temperature field with the aid of different graphical presentations and tabulated results.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Friction
  • Hot Temperature
  • Hydrodynamics*
  • Magnetic Fields
  • Models, Theoretical*
  • Skin
  • Temperature*
  • Thermal Conductivity*

Grants and funding

This work is funded by the University of KwaZulu-Natal through SM’s postdoctoral fellowship.