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Title: A numerical study of transonic buffet on a supercritical airfoil
Authors: Xiao, Q. 
Tsai, H.M. 
Liu, F.
Issue Date: 2004
Citation: Xiao, Q.,Tsai, H.M.,Liu, F. (2004). A numerical study of transonic buffet on a supercritical airfoil. AIAA Paper : 6528-6543. ScholarBank@NUS Repository.
Abstract: The steady/unsteady flow of the BGK No. 1 supercritical airfoil is investigated by the solution of the Reynolds-Averaged Navier-Stokes equations with a two-equation k-ω turbulence model. The dual-time stepping method is used to march in time. Two steady cases (Ma = 0.71, α = 1.396° and Ma = 0.71, α = 9.0°) and one unsteady case (Ma = 0.71, α = 6.97°), both with a far-stream Re = 20×10 6, are computed. The results are compared with experimental data obtained by Lee et al. The mechanism of the self-excited oscillation for supercritical airfoils is explored. The oscillation period calculated based on the mechanism proposed by Lee is consistent with the Fourier analysis of the computed lift coefficient.
Source Title: AIAA Paper
Appears in Collections:Staff Publications

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