Abstract For more than half a century, researchers have been aware that freestream fluctuations have an important effect on laminar-turbulent transition. A century of effort has also been devoted to the development of theory and experiment for the instability mechanisms that lead to transition, in order to develop more reliable prediction methods. Both these long efforts are now beginning to bear fruit in the subarea of hypersonic transition. At hypersonic speeds, it was necessary to develop quiet tunnels with laminar nozzle-wall boundary layers in order to achieve low fluctuation levels that are comparable to flight; three such tunnels are now in operation, worldwide. Hypersonic instability mechanisms are also more complex than at low speeds, and the computer resources and computational tools necessary to compute them are only now becoming fairly widely available, along with the instrumentation necessary to measure these mechanisms in a reasonably affordable way. The present review begins to show how these two steps are aiding in the development of physics-based methods for estimating transition in flight.


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    Titel :

    Developing mechanism-based methods for estimating hypersonic boundary-layer transition in flight: The role of quiet tunnels


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2014-09-11


    Format / Umfang :

    13 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






    Developing Mechanism-Based Methods for Estimating Hypersonic Boundary-Layer Transition in Flight: The Role of Quiet Tunnels

    Schneider, S.P. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2013


    The Development of Hypersonic Quiet Tunnels

    Schneider, Steven | AIAA | 2007


    The Development of Hypersonic Quiet Tunnels

    Schneider, S. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2007