An image-based flow velocimetry technique coupling pulse-burst laser technology and the cross-correlation Doppler global velocimetry (CC-DGV) technique is presented as a faster variant of the CC-DGV method. By scanning the laser frequency during the burst, the total scan time per velocity measurement can be reduced from 2–4 minutes (Cadel and Lowe, Optics and Lasers in Engineering, Vol. 71, Aug. 2015, pp. 51–61) to 10 ms, which is a speed increase of > 1000 times. A demonstration of the technique has been performed in a 50    ms 1 turbulent jet, where the accuracy and precision of the technique was determined to be 5 and 3    ms 1 , respectively, when compared with particle image velocimetry.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Pulse-Burst Cross-Correlation Doppler Global Velocimetry


    Beteiligte:

    Erschienen in:

    AIAA Journal ; 58 , 6 ; 2364-2369


    Erscheinungsdatum :

    2020-05-12


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Pulse-burst cross-correlation Doppler global Velocimetry

    Fahringer, Timothy W. / Burns, Ross A. / Danehy, Paul M. et al. | AIAA | 2019


    Pulse-burst cross-correlation Doppler global velocimetery

    Fahringer, Timothy W. / Danehy, Paul M. / Bardet, Philippe | AIAA | 2019



    Toward Snapshot Cross-Correlation Doppler Global Velocimetry for High-Speed Flows

    Saltzman, Ashley J. / Beresh, Steven J. / Kearney, Sean P. et al. | AIAA | 2022


    Doppler global velocimetry

    Usry, Jim | NTRS | 1991