Fluctuating wall pressures have been measured in Mach 5 interactions generated by sharp, upswept fins at angles of attack of 16 to 28 deg. The results show that rms pressure distributions, like the mean, can be collapsed in conical coordinates. The wall pressure signal near separation is intermittent and is qualitatively similar to that measured in unswept interactions and other swept flows. However, the dominant separation shock frequencies in the swept flows are up to an order of magnitude higher than those in unswept interactions under identical incoming flow conditions. In light of the present observations, it appears that an earlier remark, by Gilson and Dolling, that separation is characterized by a shuddering compression system, in contrast to a translating separation shock is erroneous due to a combination of weak shock strength and inadequate spatial resolution. Furthermore, although the maximum rms pressure near separation increases with increasing interaction strength, as in swept compression ramp flows, comparison of data from the two flow types indicates that the appropriate correlating parameter is the interaction sweepback angle.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Fluctuating wall pressures near separation in highly swept turbulent interactions


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    1994-06-01



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch







    Measurement of Fluctuating Wall Pressures Beneath a Supersonic Turbulent Boundary Layer

    Beresh, Steven / Henfling, John / Spillers, Russell et al. | AIAA | 2010


    MEASUREMENT OF FLUCTUATING WALL PRESSURES BENEATH A SUPERSONIC TURBULENT BOUNDARY LAYER

    Beresh, S. / Henfling, J. / Spillers, R. et al. | British Library Conference Proceedings | 2010