Unsteady separated flows over manoeuvring lifting surfaces

George N. Barakos; Dimitris Drikakis

doi:10.1098/rsta.2000.0708

Unsteady separated flows over manoeuvring lifting surfaces

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	3279-3291
Number of pages	13
Journal	Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume	358
Issue number	1777
DOIs	https://doi.org/10.1098/rsta.2000.0708
Publication status	Published - 2000
Externally published	Yes

Keywords

Dynamic stall
Pitching aerofoils
Unsteady aerodynamic flows

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10.1098/rsta.2000.0708

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AU - Drikakis, Dimitris

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AB - 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.

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KW - Unsteady aerodynamic flows

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ER -

Unsteady separated flows over manoeuvring lifting surfaces

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Keywords

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