Unsteady separated flows over manoeuvring lifting surfaces

George N. Barakos, Dimitris Drikakis

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Numerical simulations of dynamic-stall phenomena have been performed using an implicit unfactored Navier-Stokes solver and various turbulence closures, including linear and nonlinear low-Re eddy-viscosity models. The accuracy of the models has been assessed against a range of experimental data for ramping and oscillating aerofoils at subsonic and transonic conditions. The computations indicate that the nonlinear eddy-viscosity models better predict the shedding of the dynamic-stall vortex and the unsteady aerodynamic loads.
LanguageEnglish
Pages3279-3291
Number of pages13
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume358
Issue number1777
DOIs
Publication statusPublished - 15 Dec 2000

Fingerprint

lifting surfaces
separated flow
Unsteady Flow
Unsteady flow
Eddy Viscosity
eddy viscosity
aerodynamic loads
Viscosity
unsteady aerodynamics
Vortex Dynamics
Aerodynamic loads
transonic flow
Navier-Stokes
Airfoils
Aerodynamics
closures
Turbulence
Closure
Vortex flow
turbulence

Keywords

  • dynamic stall
  • pitching airfoils
  • pitching aerofoils
  • unsteady aerodynamics flows
  • airfoils
  • aerofoils
  • Navier-Stokes equations
  • subsonic conditions
  • transonic conditions
  • dynamic-stall vortex
  • viscosity models
  • turbulence closures

Cite this

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Unsteady separated flows over manoeuvring lifting surfaces. / Barakos, George N.; Drikakis, Dimitris.

In: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 358, No. 1777, 15.12.2000, p. 3279-3291.

Research output: Contribution to journalArticle

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