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Title: Improving the dynamic range of particle tracking velocimetry systems
Authors: Lim, W.L. 
Chew, Y.T. 
Chew, T.C. 
Low, H.T. 
Issue Date: Aug-1994
Citation: Lim, W.L.,Chew, Y.T.,Chew, T.C.,Low, H.T. (1994-08). Improving the dynamic range of particle tracking velocimetry systems. Experiments in Fluids 17 (4) : 282-284. ScholarBank@NUS Repository.
Abstract: In applying a video-based particle image velocimetry (PTV) system in a complex fluid flow, it is common to find both regions of fast and slow moving flow intermixing-particularly in highly turbulent or reversing flows. When one attempts to track the movement of particles in such a flow with a wide velocity range (and hence, separation distance between particle images), resolution problems are encountered. Inability to cover a wide range of velocities is actually a limitation of PTV. A method is introduced here that extends the dynamic range of PTV when implemented on a video-based system. It combines the use of multiple frames and multiple exposures on a single frame. The method is subsequently verified by tracking dots painted on a spinning flat disc. © 1994 Springer-Verlag.
Source Title: Experiments in Fluids
ISSN: 07234864
DOI: 10.1007/BF00203048
Appears in Collections:Staff Publications

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