A Hybrid Model for Lift Response to Dynamic Actuation On A Stalled Airfoil
Abstract
The current research focuses on modeling the lift response due to dynamic (time-varying) 'burst-type' actuation on a stalled airfoil. Dynamic `burst-type' actuation exhibits two different characteristic dynamic behaviors within the system, namely the high-frequency and low-frequency components. These characteristics introduce modeling challenges. In this paper, we propose a hybrid model composed of two individual sub-models, one for each of the two frequencies. The lift response due to high-frequency single burst actuation is captured using a convolution model. The low-frequency component due to nonlinear burst-burst interactions are captured using a Wiener model, consisting of linear time-invariant dynamics and a static output nonlinearity. The hybrid model is validated using data from wind tunnel experiments.
Keywords
Cite
@article{arxiv.1912.08842,
title = {A Hybrid Model for Lift Response to Dynamic Actuation On A Stalled Airfoil},
author = {Xuanhong An and David R. Williams and Maziar S. Hemati},
journal= {arXiv preprint arXiv:1912.08842},
year = {2019}
}