A combined approach of linear convolution and higher-order Volterra series (VS) to reduced-order modeling of unsteady transonic aerodynamic loads is presented. Our framework offers a simple method to determine the memory depth of the system, clearly separates the linear and the nonlinear (NL) contributions, and significantly reduces the effort required to generate a model for a wide range of reduced frequencies. The generated models use step-response data in the linear and the NL ranges, thus separating the model generation from any specific input signal or a particular reduced frequency. The models were compared against and validated using the computational fluid dynamics results of an oscillating two-dimensional NACA 0012 airfoil.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Convolution and Volterra Series Approach to Reduced-Order Modeling of Unsteady Aerodynamic Loads


    Contributors:

    Published in:

    AIAA Journal ; 60 , 3 ; 1663-1678


    Publication date :

    2021-09-23


    Size :

    16 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Nonlinear Unsteady Aerodynamic Modeling by Volterra Variational Approach

    Bommanahal, M. / Goman, M. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2012


    Nonlinear Unsteady Aerodynamic Modeling by Volterra Variational Approach

    Bommanahal, Mallesh / Goman, Mikhail | AIAA | 2012


    Modeling of Unsteady Aerodynamic Loads

    Da Ronch, A. / McCracken, A. / Badcock, K. et al. | British Library Conference Proceedings | 2011


    Modeling of Unsteady Aerodynamic Loads

    Da Ronch, A. / McCracken, A. / Badcock, K. et al. | British Library Conference Proceedings | 2011


    Modeling of Unsteady Aerodynamic Loads

    Da Ronch, Andrea / Badcock, Kenneth J. / Khrabrov, Alex et al. | AIAA | 2011