Computer-aided discrimination of slow and fast tracer paths |
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Authors: | H -H Bartels-Lehnhoff W J Hiller T A Kowalewski |
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Institution: | (1) Max-Planck-Institut für Strömungsforschung, Bunsenstr. 10, D-3400 Göttingen, Germany |
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Abstract: | An optical method for the discrimination between slow and fast tracer particles convected within a flow is proposed. It is based on the dependence of the brightness of a trace on the velocity of the corresponding tracer. The images of the traces are captured by a CCD-camera and processed on-line. A practical application of this technique to the visualization of the low velocity streamlines in a rotating duct is presented. The possibilities to develop this technique into a quantitative tool for velocity measurements is discussed. |
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