Characteristic analysis of lock-in for an elastically suspended airfoil in transonic buffet flow
نویسندگان
چکیده
منابع مشابه
Numerical Study of Transonic Buffet on a Supercritical Airfoil
The flow of the Bauer–Garabedian–Korn (BGK) No. 1 supercritical airfoil is investigated by the solution of the unsteady Reynolds-averaged Navier–Stokes equations with a two-equation lagged k–ω turbulent model. Two steady cases (M = 0.71, α= 1.396 deg and M = 0.71, α= 9.0 deg) and one unsteady case (M = 0.71, α= 6.97 deg), all with a far-stream Reynolds number of 20 × 106, are computed. The resu...
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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 ( 71 . 0 = Ma , 396 . 1 = α and 71 . 0 = Ma , 0 . 9 = α ) and one unsteady case ( 71 . 0 = Ma , 97 . 6 = α ), both with a far-stream 6 10...
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Multiple solutions of the small-disturbance potential equation and the full potential equation were known for the NACA0012 airfoil in a certain range of transonic Mach numbers and at zero angle of attack. However the multiple solutions for this particular airfoil were not observed using Euler or Navier-Stokes equations under the above flow conditions. In the present work, both the Unsteady Reyn...
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Leading edge noise is a significant broadband noise source in aircraft engines, and is the primary broadband noise mechanism in outlet guide vane noise in turbofans, and broadband rotor wake interaction noise in contra-rotating open rotor engines. Previous authors have studied the effects of various aspects relating to this noise source, including airfoil geometry effects, cascade effects, and ...
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ژورنال
عنوان ژورنال: Chinese Journal of Aeronautics
سال: 2016
ISSN: 1000-9361
DOI: 10.1016/j.cja.2015.12.002