Journal of Flow Visualization and Image Processing

ISSN for PRINT: 1065-3090

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2001, Volume8

Issue 2-3

110 pages

Issue price - $280.00

F. Schneider
Lehrstuhl fur Stromungslehre, Universitat Essen, D-45117 Essen, Germany

W. Merzkirch
Lehrstuhl fur Stromungslehre, Universitat Gesamthochschule Essen, D-45117 Essen, Germany

Planar particle image velocimetry (PIV) measurements were performed in fully developed turbulent pipe flow at Reynolds numbers of the order of 10⁵. Coherent structures were identified in the fluctuation field by using the swirling strength as the identification criterion. A number of properties of these structures were determined for later use in a model describing the principle of the cross-correlation ultrasound flowmeter by means of an approach based on systems theory.

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