Shun He1,*, Gaowei Cui2
The International Conference on Computational & Experimental Engineering and Sciences, Vol.24, No.1, pp. 1-4, 2022, DOI:10.32604/icces.2022.08753
Abstract An investigation has been made into the nonlinear aeroelastic behavior of a supercritical airfoil (NLR
7301) considering free-play in transonic flow. Computational Fluid Dynamics (CFD) based on NavierStokes equations is implemented to calculate unsteady aerodynamic forces. A loosely coupled scheme
with steady CFD and a graphic method are developed to obtain the static aeroelastic position.
Frequency domain flutter solution with transonic aerodynamic influence coefficient is used to capture
the linear flutter characteristic at different angle of attack (AoA). Time marching approach based on
CFD is used to calculate the nonlinear aeroelastic response. The bifurcation diagram of pitching
motion shows that… More >
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