The present paper explores the use of large-eddy simulations as a tool for predicting noise from first principles. A high-order numerical scheme is used to perform large-eddy simulations of a supersonic jet flow with emphasis on capturing the time-dependent flow structure representating the sound source. The wavelike nature of this structure under random inflow disturbances is demonstrated. This wavelike structure is then enhanced by taking the inflow disturbances to be purely harmonic. Application of Lighthill's theory to calculate the far-field noise, with the sound source obtained from the calculated time-dependent near field, is demonstrated. Alternative approaches to coupling the near-field sound source to the far-field sound are discussed.


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    Title :

    Structure of supersonic jet flow and its radiated sound


    Contributors:

    Published in:

    Publication date :

    1994-05-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




    Structure of supersonic jet flow and its radiated sound

    Mankbadi, Reda R. / Hayder, M. E. / Povinelli, Louis A. | AIAA | 1994


    Structure of Supersonic Jet Flow and Its Radiated Sound

    Mankbadi, R.R. | Online Contents | 1994


    Structure of supersonic jet flow and its radiated sound

    Mankbadi, R.R. / Hayer, M.E. / Povinelli, L.A. | Tema Archive | 1994


    The structure of supersonic jet flow and its radiated sound

    MANKBADI, REDA / HAYDER, M. / POVINELLI, LOUIS | AIAA | 1993