As engine, tire, and other automobile noise is reduced and as driving speeds increase, aerodynamic noise sources on ground vehicles are becoming relatively more important. They often dominate at cruise speeds above 60 mph. Aspiration and leak noise are strong sources but generally can be controlled by known methods. Turbulent pressure fluctuations due to separated and vortical flows are also strong sources. Much interior noise is caused by transmission of these external pressure fluctuations through windows and other surfaces. The paper presents the variety of aeroacoustic sources on automobiles and reviews the state of experimental data, of analysis methods, and noise reduction principles. A new correlation method for predicting external fluctuating pressures in separated regions is presented.


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    Titel :

    Automobile aerodynamic noise


    Weitere Titelangaben:

    Aerodynamisches Geräusch in Kraftfahrzeugen


    Beteiligte:
    George, A.R. (Autor:in)

    Erschienen in:

    SAE-Papers ; Mar ; 1-24


    Erscheinungsdatum :

    1990


    Format / Umfang :

    24 Seiten, 31 Bilder, 32 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Automobile Aerodynamic Noise

    George, Albert R. | SAE Technical Papers | 1990


    Automobile aerodynamic noise

    George,A.R. / Cornell Univ.,US | Kraftfahrwesen | 1990


    About aerodynamic automobile leak noise

    Mirzoev, G.K. / Danilov, O.V. / Fessina, M.I. | Tema Archiv | 1996


    Estimation method for automobile aerodynamic noise

    Haruna,S. / Kamimoto,I. / Okamoto,S. et al. | Kraftfahrwesen | 1992


    Estimation Method for Automobile Aerodynamic Noise

    Kamimoto, Ichiro / Okamoto, Satoshi / Haruna, Shigeru | SAE Technical Papers | 1992