A method is presented for using large-eddy simulation to generate urban wake fields for use in studying the effects on the autonomous flight performance of a small quadrotor. The flowfield is solved around a single square building using OpenFOAM and stored in a database accessed by a MATLAB/Simulink flight simulator. Four flight missions are evaluated to compare the difference in performance between wake fields generated by Reynolds-averaged Navier–Stokes and large-eddy simulation solutions. The results of the holding position in a constant freestream wind show both methods produce similar results and can hold position in all three directions within approximately ± 1.5 body lengths. When the quadrotor is in or on the boundary of the building wake, the maximum deviation volumes, as calculated when using a Reynolds-averaged Navier–Stokes or large-eddy simulation air wake, can differ by two orders of magnitude. Additionally, the large-eddy simulation air wakes can cause skewed deviations by as much as five to one in a given direction for both holding position and moving along a desired flight path. Since the turbulent large-eddy simulation wake field more accurately reflects the flow physics present within the wake of real-world structures, it is recommended that large-eddy-simulation-generated wake fields be used when designing and testing autonomous control algorithms for multirotor unmanned aerial vehicles on the order of 0.5 m in size and 2 kg in mass.


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    Titel :

    Urban Wake-Field Generation Using Large-Eddy Simulation for Application to Quadrotor Flight


    Beteiligte:
    Sutherland, M. (Autor:in) / Etele, J. (Autor:in) / Fusina, G. (Autor:in)

    Erschienen in:

    Journal of Aircraft ; 53 , 5 ; 1224-1236


    Erscheinungsdatum :

    01.09.2016




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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