Unsteady rotor wake interactions with the empenage, tail boom, and other aerodynamic surfaces of a helicopter have a significant influence on its aerodynamic performance, the ride quality, and amount of vibration. A numerical method for computing the aerodynamic interaction between an interacting vortex wake and the viscous flow about arbitrary two-dimensional bodies has been developed to address this helicopter problem. The method solves for the flow field velocities on a body-fitted computational mesh using finite-difference techniques. The interaction of a rotor wake with the flow about a 4:1 elliptic cylinder at 45-deg incidence was calculated for a Reynolds number of 3000.


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    Titel :

    Aerodynamic interaction between vortical wakes and lifting two-dimensional bodies


    Beteiligte:

    Kongress:

    AHS, Annual Forum ; 1987 ; Saint Louis, MO, United States


    Erscheinungsdatum :

    1987-01-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :



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    Vortical structures in bluff body wakes

    Mittal, R / Balachandar, S | AIAA | 1995


    Unsteady vortical wakes over a prolate spheroid

    COSTIS, C. / TELIONIS, D. | AIAA | 1984