This paper investigates the use of high-power light emitting diode (LED) illumination in Particle Image Velocimetry (PIV) as an alternative to traditional laser-based illumination. The solid-state LED devices can provide averaged radiant power in excess of 10W and by operating the LEDs with short current pulses, considerably higher than in continuous operation, light pulses of sufficient energy suitable for imaging micron-sized particles can be generated. The feasibility of this LED-based illumination for tomographic PIV is demonstrated in this paper by measuring the turbulent velocity field in gridgenerated homogeneous turbulence.


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    Title :

    Tomographic Particle Image Velocimetry using Pulsed, High Power LED Volume Illumination


    Contributors:
    Buchmann, N. A. (author) / Willert, C. (author) / Soria, J. (author)

    Publication date :

    2011-07-01


    Type of media :

    Conference Proceedings


    Type of material :

    Electronic Resource


    Language :

    English




    Tomographic Particle Image Velocimetry using Pulsed, High Power LED Volume Illumination

    Buchmann, N. A. / Willert, C. / Soria, J. | German Aerospace Center (DLR) | 2011

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