VISCOSITY AND DISPERSION EFFECTS ON NATURAL CONVECTION FROM A VERTICAL CONE IN A NONNEWTONIAN FLUID SATURATED POROUS MEDIUM

Abstract

This paper investigates the influence of double dispersion and viscosity on natural convection heat and mass transfer from vertical cone in a non-Darcy porous medium saturated with non-Newtonian fluid. The surface of the cone and the ambient medium are maintained at constant but different levels of temperature and concentration. The Ostwald-de Waele power law model is used to characterize the non-Newtonian fluid behavior. A similarity solution for the transformed governing equations is obtained. The numerical computation is carried out for various values of the non-dimensional physical parameters. The effect of non-Darcy parameter, viscosity parameter, thermal and solutal dispersion, buoyancy ratio, Lewis number and power-law index parameter on the temperature and concentration field as well as on the heat and mass transfer coefficients is analyzed.

Keywords

Dates

  • Submission Date2011-06-14
  • Revision Date2011-09-23
  • Acceptance Date2011-10-08

DOI Reference

10.2298/TSCI110614124K

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