The analysis of rotors in hover has always been a significant challenge. The presence of strong vortices underneath the rotor requires a large amount of grid points to properly capture the vorticity, and many time steps are required to reach a time-independent state. To bring the simulation cost to a more practical state for industry, a modified hybrid Navier–Stokes/free-wake method has been introduced, which successfully reduced grid count and simulation time by one order of magnitude compared to full Navier–Stokes simulations. In this hybrid method, Navier–Stokes and free-wake solvers are loosely coupled for fast convergence in hover. The S-76 model-scale blades with three tip designs were studied to assess current approaches. The proposed approaches showed reasonable-to-good correlation with measured figure of merit, thrust, and torque data. The effects of tip-design and tip-speed variations were captured well. The physical mechanisms of tip-design impact on hover performance were also studied.


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    Titel :

    Modified Hybrid Navier–Stokes/Free-Wake Method for Hovering Rotor Analysis


    Beteiligte:
    Min, Byung-Young (Autor:in) / Wake, Brian (Autor:in)

    Erschienen in:

    Journal of Aircraft ; 55 , 1 ; 38-51


    Erscheinungsdatum :

    2017-02-10


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






    Analysis of a Hovering Rotor using UT-GENCAS: A Modified Hybrid Navier-Stokes/Free-Wake Method (AIAA 2015-1247)

    Min, Byung-Young / Wake, Brian | British Library Conference Proceedings | 2015


    Navier-Stokes calculations of hovering rotor flowfields

    Srinivasan, G. R. / Mccroskey, W. J. | NTRS | 1988


    Navier-Stokes calculations of hovering rotor flowfields

    SRINASAN, G. R. / MCCROSKEY, W. J. | AIAA | 1988