The foundations of the field method for measuring the flow velocities - the particle image velocimetry (PIV) method - are presented. An approach is described that ensures measurements of conventionally averaged characteristics in flows with pronounced periodicity. Using the high-resolution PIV and conditional averaging methods, detailed measurements of the velocity fields in an axisymmetrical impact jet have been performed for the first time. The flow characteristics are analyzed using a triple decomposition of fluctuating quantities.
|Number of pages||8|
|Journal||Instruments and Experimental Techniques|
|Publication status||Published - 1 Sep 2004|
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