Flow bifurcation and eddy genesis in an L-shaped cavity

DELİCEOĞLU A., AYDIN S. H.

COMPUTERS & FLUIDS, vol.73, pp.24-46, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 73
  • Publication Date: 2013
  • Doi Number: 10.1016/j.compfluid.2012.12.008
  • Journal Name: COMPUTERS & FLUIDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.24-46
  • Karadeniz Technical University Affiliated: Yes

Abstract

Flow bifurcation and eddy generation in a steady, viscous L-shaped cavity with the lids moving in opposite directions are investigated by a numerical method. The flow is governed by Stokes or Navier-Stokes equations with two control parameters h(1) and h(2) which are related to the heights of the L-shaped domain. A Galerkin finite element method with a stabilization technique is applied in order to obtain the numerical solution of the specified equations. Attention is focused on the topological behavior near a reentrant corner on the boundary. In general, local reentrant corner analysis provides a key to the understanding of the eddy generation in L-shaped cavities. Finally, the effect of the Reynolds number on flow bifurcations and eddy generation is investigated. (C) 2012 Elsevier Ltd. All rights reserved.