A new approach to the vortex wake of a helicopter is described. This approach makes it possible to obtain highly accurate resolution of the flowfield experienced by the tail rotor with modest computational effort relative to alternative models. A full-span free wake model of the main rotor in a scheme is presented which reconstructs high resolution flow solutions from preliminary simulations with coarse resolution. A new reconstruction method uses local velocity correction terms to capture the steep velocity gradients characteristic of the the vortex-dominated incident flow. The approach is considered to be successful in capturing the high resolution flows necessary for analysis of rotor-wake/rotor interactions with substantially reduced computational cost.


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    Titel :

    Prediction of high-resolution flowfields for rotorcraft aeroacoustics


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    1991-11-01



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Prediction of high-resolution flowfields for rotorcraft aeroacoustics

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    Prediction of high-resolution flowfields for rotorcraft aeroacoustics

    Quackenbush, T.R. / Bliss, D.B. | Tema Archiv | 1991


    Aeroacoustics of Rotorcraft

    R. D. Janakiram | NTIS | 1990


    RCAAPS - Rotorcraft Computational AeroAcoustics Post-Processing System

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    RCAAPS - ROTORCRAFT COMPUTATIONAL AEROACOUSTICS POST-PROCESSING SYSTEM

    Duque, E. / Stone, C. / Brentner, K. et al. | British Library Conference Proceedings | 2010