Localized arc filament plasma actuators were used to control pressure fluctuations in a cavity with a depth of 12.7 mm and length-to-depth ratio of 4.86. The rear wall of the cavity is inclined 30 deg with respect to the upstream flow, and the cavity length is 61.7 mm. Five actuators were uniformly distributed along the span of the cavity, 1 mm upstream of the cavity leading edge. Experiments were conducted in a flow with a Mach number of 0.6 and a Reynolds number based on the cavity depth of 2 × 10 5 . Forcing was conducted quasi-two-dimensionally (all actuators operated in phase) and three-dimensionally (actuators operated out of phase). The objective of the research was twofold: first, to demonstrate that the peak tone as well as the broadband pressure fluctuations can be suppressed in a strongly resonating cavity, and second, the resonance can be re-established and the peak tone as well as the broadband pressure fluctuations can be amplified in a weakly resonating cavity. Time-resolved pressure and particle-image-velocimetry measurements were used to assess the effectiveness of the actuators and to explore the physics of the flow. Although both quasi-two-dimensional and three-dimensional controls were successful in controlling the flow, the control was less sensitive to forcing frequency change in the latter in achieving the first objective. The results also showed that, although there are many forcing frequency options in achieving the first objective, the options are limited to frequencies near the dominant (even though weak) Rossiter modes in re-establishing the feedback in a weakly resonating cavity.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Control of High Subsonic Cavity Flow Using Plasma Actuators


    Beteiligte:
    Yugulis, K. (Autor:in) / Hansford, S. (Autor:in) / Gregory, J. W. (Autor:in) / Samimy, M. (Autor:in)

    Erschienen in:

    AIAA Journal ; 52 , 7 ; 1542-1554


    Erscheinungsdatum :

    2014-01-31


    Format / Umfang :

    13 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Control of High Subsonic Cavity Flow Using Plasma Actuators

    Yugulis, Kevin / Gregory, James / Samimy, Mo | AIAA | 2013



    Control of High Subsonic Cavity Flow Using Plasma Actuators

    Yugulis, K. / Gregory, J. / Samimy, M. et al. | British Library Conference Proceedings | 2013


    Flow Control at Subsonic Speeds using Serpentine Plasma Actuators

    Kontis, Konstantinos / Zare-Behtash, Hossein / Roy, Subrata | AIAA | 2014