Journal article

Nonlinear reduced-order modeling of the forced and autonomous aeroelastic response of a membrane wing using Harmonic Balance methods

M Nardini, SJ Illingworth, RD Sandberg

Journal of Fluids and Structures | Academic Press | Published : 2019

Abstract

A nonlinear reduced-order model for a membrane wing at low Reynolds numbers is obtained by coupling a linear aerodynamic model with a nonlinear one-dimensional membrane equation. Steady-state solutions for the membrane's aeroelastic response are obtained by means of Harmonic Balance methods in the frequency-domain and in the time-domain. Harmonic Balance methods are adopted to investigate the aeroelastic response of a membrane wing pitching about its leading-edge at Re=100, for different values of the pitching angle. Differences between the two Harmonic Balance approaches are discussed and validations of the methods are carried out using high-fidelity Direct Numerical Simulations. The effect..

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Grants

Funding Acknowledgements

Computing resources provided at the NCI National Facility systems at the Australian National University through the National Computational Merit Allocation Scheme supported by the Australian Government are acknowledged.