The femtosecond laser electronic excitation and tagging (FLEET) method has been used to measure three components of velocity and acceleration for the first time. A jet of pure N2 issuing into atmospheric pressure air was probed by the FLEET system. The femtosecond laser was focused down to a point to create a small measurement volume in the flow. The long-lived lifetime of this fluorescence was used to measure the location of the tagged particles at different times. Simultaneous images of the flow were taken from two orthogonal views using a mirror assembly and a single intensified CCD camera, allowing two components of velocity to be measured in each view. These different velocity components were combined to determine three orthogonal velocity components. The differences between subsequent velocity components could be used to measure the acceleration. Velocity accuracy and precision were roughly estimated to be +/-4 m/s and +/-10 m/s respectively. These errors were small compared to the approx. 100 m/s velocity of the subsonic jet studied.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Three Component Velocity and Acceleration Measurement Using FLEET


    Beteiligte:
    Danehy, Paul M. (Autor:in) / Bathel, Brett F. (Autor:in) / Calvert, Nathan (Autor:in) / Dogariu, Arthur (Autor:in) / Miles, Richard P. (Autor:in)

    Kongress:

    American Inst of Aeronautics and Astronautics (AIAA)/ Council of European Aerospace Societies (CEAS) Aeroacoustics Conference ; 2014 ; Atlanta, GA, United States


    Erscheinungsdatum :

    2014-06-17


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Three Component Velocity and Acceleration Measurement Using FLEET

    Danehy, Paul M. / Bathel, Brett F. / Calvert, Nathan D. et al. | AIAA | 2014



    Simultaneous Temperature and Velocity Measurement in Unseeded Air Flows with FLEET

    Edwards, M. / Dogariu, A. / Miles, R. et al. | British Library Conference Proceedings | 2013


    Simultaneous Temperature and Velocity Measurement in Unseeded Air Flows with FLEET

    Edwards, Matthew / Dogariu, Arthur / Miles, Richard | AIAA | 2013


    FLEET Boundary Layer Velocity Profile Measurements

    Calvert, Nathan / Dogariu, Arthur / Miles, Richard B. | AIAA | 2013