Free convection effects on the oscillatory flow of a couple stress fluid through a porous medium

P. S. Hiremath, P. M. Patil

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)

Abstract

Effects of free convection currents on the oscillatory flow of a polar fluid through a porous medium, which is bounded by a vertical plane surface of constant temperature, have been studied. The surface absorbs the fluid with a constant suction and the free stream velocity oscillates about a constant mean value. Analytical expressions for the velocity and the angular velocity fields have been obtained, using the regular perturbation technique. The effects of Grashof number G; material parameters α and β; Prandtl number P; permeability parameter K and frequency parameter n on the velocity and the angular velocity are discussed. The effects of cooling and heating of a polar fluid compared to a Newtonian fluid have also been discussed. The velocity of a polar fluid is found to decrease as compared to the Newtonian fluid.

Original languageEnglish
Pages (from-to)143-158
Number of pages16
JournalActa Mechanica
Volume98
Issue number1-4
DOIs
Publication statusPublished - Mar 1993
Externally publishedYes

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanical Engineering

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