A measuring system based on a differential laser-Doppler anemometer has been extended to determine one-dimensional velocity profiles of shear flows with a spatial resolution in the micrometer range. The principle of the realised velocity profile sensor is based on two-wavelength fringe systems with different gradients of their fringe spacings. After wavelength-sensitive detection two Doppler frequencies are determined, which yield the position as well as the velocity component of individual tracer particles.


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    Title :

    Spatially-resolved velocity profile measurements by means of a two-wavelength technique


    Contributors:
    Buttner, L. (author) / Czarske, J. (author) / Razik, T. (author)


    Publication date :

    2003-01-01


    Size :

    131782 byte



    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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