Objective of the present work is the development and validation of a computational methodology for the prediction of flow-induced noise around a vehicle. The technique employed makes use of the Lighthill's acoustic analogy revised for low Mach number flows and consists of two steps: prediction of noise sources over the body surface by means of a suitable Computational Fluid Dynamics (CFD) technique and subsequent prediction of the radiated noise by solving the Ffowks-Williams Hawkings equation. For testing the methodology flows around a cylinder and a test shape, generating the type of flows occuring around the A-pillar of a car, have been employed. Results are compared with experimental data. The paper demonstrates the feasibility of computational prediction of aerodynamic noise even for turbulent high Reynolds number flows.


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    Title :

    Computational Prediction of Vehicle Aerodynamic Noise by Integration of a CFD Technique with Lighthill's Acoustic Analogy


    Additional title:

    Sae Technical Papers


    Contributors:
    Vitali, D. F. (author) / Casella, M. (author) / Bergamini, P. (author)

    Conference:

    SAE International Congress and Exposition ; 1997



    Publication date :

    1997-02-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Computational prediction of vehicle aerodynamic noise integration of a CFD technique with Lighthill's acoustic analogy

    Bergamini, P. / Casella, M. / Vitali, D. F. et al. | British Library Conference Proceedings | 1997


    Computational Prediction of Vehicle Aerodynamic Noise by Integration of a CFD Technique with Lighthill's Acoustic Analogy

    Bergamini, P. / Casella, M. / Vitali, D. F. et al. | British Library Conference Proceedings | 1997


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