@article{ded15f1c8c3c43d69c88c5dab67e0053,
title = "Prediction of Transonic Limit-Cycle Oscillations Using an Aeroelastic Harmonic Balance Method",
abstract = "This work proposes a novel approach to compute transonic limit-cycle oscillations using high-fidelity analysis. Computational-Fluid-Dynamics based harmonic balance methods have proven to be efficient tools to predict periodic phenomena. This paper{\textquoteright}s contribution is to present a new methodology to determine the unknown frequency of oscillations, enabling harmonic balance methods to accurately capture limit-cycle oscillations; this is achieved by defining a frequency-updating procedure based on a coupled computational-fluid-dynamics/computational-structural-dynamics harmonic balance formulation to find the limit-cycle oscillation condition. A pitch/plunge airfoil and delta wing aerodynamic and respective linear structural models are used to validate the new method against conventional time-domain simulations. Results show consistent agreement between the proposed and time-marching methods for both limit-cycle oscillation amplitude and frequency while producing at least a one-order-of-magnitude reduction in computational time.",
keywords = "Aeroelasticity, Harmonic Balance, CFD, Transonic",
author = "W. Yao and S. Marques",
year = "2015",
month = jul,
doi = "10.2514/1.J053565",
language = "English",
volume = "53",
pages = "2040--2051",
journal = "AIAA Journal",
issn = "0001-1452",
publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",
number = "7",
}