Bifurcation phenomena in incompressible sudden expansion flows

D. Drikakis

Research output: Contribution to journalArticle

152 Citations (Scopus)

Abstract

A numerical study of laminar incompressible flows in symmetric plane sudden expansions was carried out. Computations were performed for various Reynolds number and expansion ratios. The results revealed that the flow remains symmetric up to a certain Reynolds number depending on the expansion ratio, while asymmetries appear at higher Reynolds numbers. The computations indicated that the critical Reynolds number of the symmetry-breaking bifurcation reduces when increasing the expansion ratio while the flow regains symmetry downstream of an initial channel length. The flow asymmetries were verified by comparing several discretization schemes up to fourth order of accuracy as well as various iterative solvers.
LanguageEnglish
Pages76-87
Number of pages12
JournalPhysics of Fluids
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Jan 1997

Fingerprint

Reynolds number
Bifurcation
expansion
Asymmetry
asymmetry
Iterative Solvers
Regain
incompressible flow
Incompressible flow
Discretization Scheme
high Reynolds number
Laminar Flow
Incompressible Flow
Symmetry Breaking
Fourth Order
Numerical Study
broken symmetry
Symmetry
symmetry

Keywords

  • bifurcations
  • laminar flow
  • sudden expansions
  • Reynolds number
  • computational methods
  • mathematical modelling
  • Reynolds stress modeling
  • Numerical modeling
  • numerical modelling

Cite this

Drikakis, D. / Bifurcation phenomena in incompressible sudden expansion flows. In: Physics of Fluids. 1997 ; Vol. 9, No. 1. pp. 76-87.
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Bifurcation phenomena in incompressible sudden expansion flows. / Drikakis, D.

In: Physics of Fluids, Vol. 9, No. 1, 01.01.1997, p. 76-87.

Research output: Contribution to journalArticle

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