Effects of the side walls on the unsteady flow of a second-grade fluid in a duct of uniform cross-section


Erdogan M., İmrak C. E.

INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS, vol.39, no.8, pp.1379-1384, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 8
  • Publication Date: 2004
  • Doi Number: 10.1016/j.ijnonlinmec.2003.12.004
  • Journal Name: INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1379-1384
  • Keywords: second-grade fluid, unsteady flow, rectangular duct, effect of the side walls, IMPULSIVE MOTION, UNIDIRECTIONAL FLOWS, SUDDEN APPLICATION, 2ND-ORDER FLUID, FLAT-PLATE, 2ND GRADE, STEADY, EQUATIONS
  • Istanbul Technical University Affiliated: Yes

Abstract

In this paper, the effects of the side walls on the unsteady flow of a second-grade fluid in a duct of rectangular cross-section are considered. Two types of Unsteady flows are investigated. One of them is the Unsteady flow in a duct of rectangular cross-section moving parallel to its length and the other is the unsteady flow due to an applied pressure gradient in a duct of rectangular cross-section whose sides are at rest. It is shown that a Newtonian fluid reaches steady-state earlier than a second-grade fluid and the effect of the side walls on a second-grade fluid is more effective than that on a Newtonian fluid. (C) 2004 Elsevier Ltd. All rights reserved.