We investigate a new type of flow-tagging velocimetry technique for hypersonic flows. The technique involves exciting a thin line of nitric oxide molecules with a laser beam and then, after some delay, acquiring an image of the displaced line. One component of velocity is determined from the time of flight. This method is applied to measure the velocity profile in a Mach 8.5 laminar, hypersonic boundary layer in the Australian National Universities T2 free-piston shock tunnel. The velocity is measured with an uncertainty of approximately 2%. Comparison with a CFD simulation of the flow shows reasonable agreement.


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    Title :

    Flow-Tagging Velocimetry for Hypersonic Flows Using Fluorescence of Nitric Oxide


    Contributors:

    Conference:

    39th AIAA Aerospace Sciences Meeting and Exhibit ; 2001 ; Reno, NV, United States


    Publication date :

    2001-01-01


    Type of media :

    Preprint


    Type of material :

    No indication


    Language :

    English




    Flow-Tagging Velocimetry for Hypersonic Flows Using Fluorescence of Nitric Oxide

    Danehy, P. M. / O Byrne, S. / Houwing, A. F. P. et al. | British Library Conference Proceedings | 2001


    Flow-Tagging Velocimetry for Hypersonic Flows Using Fluorescence of Nitric Oxide

    Paul M. Danehy / Sean O' / Byrne, A. Frank P. Houwing et al. | AIAA | 2003