Supersonic boundary-layer receptivity to freestream acoustic disturbances is investigated by solving the Navier–Stokes equations for Mach 3.5 flow over a 7 deg half-angle cone. The freestream disturbances are generated from a wavy wall placed at the nozzle wall. The freestream acoustic disturbances radiated by the wavy wall are obtained by solving the linearized Euler equations. The results show that no noticeable instability modes are generated when the acoustic disturbances impinge the cone obliquely. The results show that the perturbations generated inside the boundary layer by the acoustic disturbances are the response of the boundary layer to the external forcing. The amplitude of the forced disturbances inside the boundary layer are about 2.5 times larger than the incoming field for zero azimuthal wave number, and they are about 1.5 times for large azimuthal wave numbers.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Receptivity and Forced Response to Acoustic Disturbances in High-Speed Boundary Layers


    Beteiligte:
    Balakumar, P. (Autor:in) / King, Rudolph A. (Autor:in) / Chou, Amanda (Autor:in) / Owens, Lewis R. (Autor:in) / Kegerise, Michael A. (Autor:in)

    Erschienen in:

    AIAA Journal ; 56 , 2 ; 510-523


    Erscheinungsdatum :

    2017-11-21


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Receptivity and Forced Response to Acoustic Disturbances in High-Speed Boundary Layers

    Balakumar, P. / King, Rudolph A. / Chou, Amanda et al. | NTRS | 2017


    Receptivity and Forced Response to Acoustic Disturbances in High-Speed Boundary Layers

    Balakumar, Ponnampalam / King, Rudolph A. / Chou, Amanda et al. | AIAA | 2016


    Receptivity of Supersonic Boundary Layers to Acoustic Disturbances

    Malik, Mujeeb / Balakumar, Ponnampalam | AIAA | 2005