Space-time techniques for computational aerodynamics modeling of flapping wings of an actual locust

Kenji Takizawa, Bradley Henicke, Anthony Puntel, Nikolay Kostov, Tayfun E. Tezduyar

    Research output: Contribution to journalArticle

    85 Citations (Scopus)

    Abstract

    We present the special space-time computational techniques we have introduced recently for computational aerodynamics modeling of flapping wings of an actual locust. These techniques have been designed to be used with the deforming-spatial-domain/stabilized space-time (DSD/SST) formulation, which is the core computational technique. The DSD/SST formulation was developed for flow problems with moving interfaces and was elevated to newer versions over the years, including the space-time version of the residual-based variational multiscale (VMS) method, which is called "DSD/SST-VMST" and used in the computations reported here. The special space-time techniques are based on using, in the space-time flow computations, NURBS basis functions for the temporal representation of the motion and deformation of the locust wings. The motion and deformation data is extracted from the high-speed, multi-camera video recordings of a locust in a wind tunnel. In addition, temporal NURBS basis functions are used in representation of the motion and deformation of the volume meshes computed and also in remeshing. These ingredients provide an accurate and efficient way of dealing with the wind tunnel data and the mesh. The computations demonstrate the effectiveness of the core and special space-time techniques in modeling the aerodynamics of flapping wings, with the wing motion and deformation coming from an actual locust.

    Original languageEnglish
    Pages (from-to)743-760
    Number of pages18
    JournalComputational Mechanics
    Volume50
    Issue number6
    DOIs
    Publication statusPublished - 2012

    Fingerprint

    Aerodynamics
    Computational fluid dynamics
    Space-time
    Modeling
    Wind tunnels
    NURBS
    Video recording
    Motion
    Wind Tunnel
    Computational Techniques
    Basis Functions
    Cameras
    Variational multiscale Method
    Mesh
    Moving Interface
    Remeshing
    Formulation
    High Speed
    Camera
    Demonstrate

    Keywords

    • Computational aerodynamics
    • Flapping wings
    • Locust
    • Mesh moving techniques
    • NURBS
    • Remeshing
    • Space-time techniques

    ASJC Scopus subject areas

    • Computational Theory and Mathematics
    • Mechanical Engineering
    • Ocean Engineering
    • Applied Mathematics
    • Computational Mathematics

    Cite this

    Space-time techniques for computational aerodynamics modeling of flapping wings of an actual locust. / Takizawa, Kenji; Henicke, Bradley; Puntel, Anthony; Kostov, Nikolay; Tezduyar, Tayfun E.

    In: Computational Mechanics, Vol. 50, No. 6, 2012, p. 743-760.

    Research output: Contribution to journalArticle

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