A dual-stream nozzle configuration was studied numerically with the objective of predicting the appearance of tones and study their sources. It was found that some of the tones traced to a coupling between Strouhal shedding from the struts, which held different pieces of the nozzle together, and various duct acoustic modes. A focus of the work was on exploring the nature of the duct modes. First, elements of the numerical procedure were studied for a 4-strut nozzle, validating the results with existing experimental data. The approach was then applied to a 3-strut geometry and four different excitation methods. The predicted tones and associated duct modes are analyzed in detail.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Resonance and Tones in Dual-Stream Nozzle Flows


    Beteiligte:

    Kongress:

    AIAA Aviation 2018 ; 2018 ; Atlanta, GA, United States


    Erscheinungsdatum :

    2018-06-25


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Resonance and Tones in Dual-Stream Nozzles induced by vortex shedding from struts

    Milanovic, Ivana M. / Zaman, Khairul Q. / Miller, Christopher | AIAA | 2018


    Impingement Tones and Associated Shock Instabilities in Supersonic Plug Nozzle Flows

    Powis, Andrew T. / Brunet, Ryan J. / Lynch, Joshua P. et al. | AIAA | 2016




    Numerical simulation of multi-stream nozzle flows

    PEERY, K. / FORESTER, C. | AIAA | 1979