Unsteady separated flows over manoeuvring lifting surfaces

George N. Barakos, Dimitris Drikakis

Research output: Contribution to journalArticle

23 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.
Original languageEnglish
Pages (from-to)3279-3291
Number of pages13
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume358
Issue number1777
DOIs
Publication statusPublished - 15 Dec 2000

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

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