TY - GEN
T1 - Bifurcation behavior and unsteady flow mechanism of limit cycle oscillation of transonic wing
AU - Liu, Nan
AU - Yang, Ximing
AU - Guo, Chengpeng
AU - Liu, Yan
AU - Bai, Junqiang
N1 - Publisher Copyright:
© 2017, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2017
Y1 - 2017
N2 - Shock wave and induced boundary layer separation are typical flow nonlinear phenomena, which will cause complex aeroelastic behavior such as limit cycle oscillation, buffeting, etc. In this paper, unsteady Reynolds-Averaged Navier-Stokes solver and structural equations of motion are coupled to establish a high-fidelity aeroelastic solver. The flutter boundaries and limit cycle oscillation of two-dimensional NACA64A010 airfoil and three-dimensional Goland+wing are both analyzed by inviscid and viscous solver. It is demonstrated that there are unstable branch in inviscid limit cycle, while no unstable branches existin viscous limit cycle. The type shift of shock wave, viscous effect and other flow nonlinearities can inhibit energy transfer between flow field and structure, which may cause limit cycle oscillation.
AB - Shock wave and induced boundary layer separation are typical flow nonlinear phenomena, which will cause complex aeroelastic behavior such as limit cycle oscillation, buffeting, etc. In this paper, unsteady Reynolds-Averaged Navier-Stokes solver and structural equations of motion are coupled to establish a high-fidelity aeroelastic solver. The flutter boundaries and limit cycle oscillation of two-dimensional NACA64A010 airfoil and three-dimensional Goland+wing are both analyzed by inviscid and viscous solver. It is demonstrated that there are unstable branch in inviscid limit cycle, while no unstable branches existin viscous limit cycle. The type shift of shock wave, viscous effect and other flow nonlinearities can inhibit energy transfer between flow field and structure, which may cause limit cycle oscillation.
UR - https://www.scopus.com/pages/publications/85067318525
U2 - 10.2514/6.2017-4362
DO - 10.2514/6.2017-4362
M3 - 会议稿件
AN - SCOPUS:85067318525
SN - 9781624105012
T3 - 35th AIAA Applied Aerodynamics Conference, 2017
BT - 35th AIAA Applied Aerodynamics Conference, 2017
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 35th AIAA Applied Aerodynamics Conference, 2017
Y2 - 5 June 2017 through 9 June 2017
ER -