Particle Tracking Velocimetry Using Laser-Beam Scanning and Its Application to Transient Flows Driven by a Rotating Disk

[+] Author and Article Information
S. Ushijima, N. Tanaka

Central Research Institute of Electric Power Industry (CRIEPI), 1646 Abiko, Abiko-shi, Chiba-ken, 270-11, Japan

J. Fluids Eng 116(2), 265-272 (Jun 01, 1994) (8 pages) doi:10.1115/1.2910265 History: Received January 12, 1993; Revised September 28, 1993; Online May 23, 2008


A particle tracking velocimetry (PTV) system has been developed to obtain instantaneous two velocity components on several sections in three-dimensional space. The flow visualization is conducted by means of parallel laser-light sheets created by a scanning laser beam and the visualized particle images are taken by a highspeed video system synchronized with the scanning. In order to obtain higher accuracy in velocity measurements than usual PTV, some improvements are made on the analyzing procedures: the extraction of particle images, the determination of their center points, the derivation of velocity components and others. The present PTV was applied to the transient flows in a cylindrical tank with a rotating disk. As a result, two-dimensional transient flow patterns with large scale disturbances are continuously captured in three-dimensional space.

Copyright © 1994 by The American Society of Mechanical Engineers
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