A variation on molecular tagging velocimetry (MTV) [1] designated iodine tagging velocimetry (ITV) is demonstrated. Molecular iodine is tagged by two-photon absorption using an Argon Fluoride (ArF) excimer laser. A single camera measures fluid displacement using atomic iodine emission at 206 nm. Two examples ofMTVfor cold-flowmeasurements areN2OMTV [2] and Femtosecond Laser Electronic Excitation Tagging [3]. These, like most MTV methods, are designed for atmospheric pressure applications. Neither can be implemented at the low pressures (0.1- 1 Torr) in typical hypersonic wakes. Of all the single-laser/singlecamera MTV approaches, only Nitric-Oxide Planar Laser Induced Fluorescence-based MTV [4] has been successfully demonstrated in a Mach 10 wake. Oxygen quenching limits transit times to 500 ns and accuracy to typically 30%. The present note describes the photophysics of the ITV method. Off-body velocimetry along a line is demonstrated in the aerothermodynamically important and experimentally challenging region of a hypersonic low-pressure near-wake in a Mach 10 air wind tunnel. Transit times up to 10 μs are demonstrated with conservative errors of 10%.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Iodine Tagging Velocimetry in a Mach 10 Wake


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2013-07-01


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Iodine Tagging Velocimetry in a Mach 10 Wake

    Balla, R. Jeffrey | AIAA | 2013


    Iodine Tagging Velocimetry in a Mach 10 Wake (TN)

    Balla, R J | Online Contents | 2013


    Hydroxyl Tagging Velocimetry in Cavity-Piloted Mach 2 Combustor

    Lahr, Michael / Pitz, Robert / Douglas, Zachary et al. | AIAA | 2006


    Hydroxyl Tagging Velocimetry in Cavity-Piloted Mach 2 Combustor (AIAA2006-0040)

    Lahr, M. D. / Pitz, R. W. / Douglas, Z. W. et al. | British Library Conference Proceedings | 2006


    Hydroxyl Tagging Velocimetry

    Pitz, Robert | AIAA | 2008