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particle image velocimetry

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particle image velocimetry

[‚pärd·i·kəl ‚im·ij ‚vel·ə′säm·ə·trē]
(engineering)
A method of measuring local fluid velocities at thousands of locations in a fluid flow by optically observing large numbers of particles that are suspended in the fluid and move with it, using a photograph of the flow illuminated by two or more successive pulses of light or continuously for a known time interval. Also known as particle tracking velocimetry.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive
Westerweel, Particle Image Velocimetry, Cambridge University Press, 2011.
Kompenhans, "Recent applications of particle image velocimetry in large-scale industrial wind tunnels," in Proceedings of the 17th International Congress on Instrumentation in Aerospace Simulation Facilities (ICIASF '97), September-October 1997
Particle Image Velocimetry (PIV) is another optical technique similar to LDV for measuring fluid velocity and flow patterns.
S., Particle Image Velocimetry for Characterizing the Flow Structure in Two-Dimensional Gas-Liquid-Solid Fluidized Beds.
Two non-invasive, optical measuring techniques have been combined, namely Particle Image Velocimetry (PIV) and Digital Image Analysis (DIA), so that the instantaneous emulsion phase velocity fields are obtained together with detailed information on the bubble phase (local bubble size and velocity distribution, bubble fraction, etc.), which allows investigation of the mutual interaction between the bubble and emulsion phase in detail.
Other topics include fullerene-Nafion composite membranes, mathematical analysis of membrane water content, comparison of Maxwell-Stefan and CFD approximation equations, and measurement of fuel cell flowfields using particle image velocimetry. No subject index is provided.
Particle image velocimetry (PIV) profiles are considered in the perspective of the dynamic uniaxial extensional viscosity (DUEV) of the coatings and an effort to understand the results in terms of the structural aspects of the thickener molecules is undertaken.
The commonly used methods at present and the potential techniques for the near future for indoor airflow measurements include rotating vane anemometers, thermal anemometers, ultrasonic anemometers, Laser-Doppler velocimetry, visualization techniques, particle image velocimetry, particle tracking velocimetry, and molecular tagging velocimetry.
Laser sheet imaging and Particle Image Velocimetry (PIV), were used for this purpose.
Single-plane illumination of the moving particles (perhaps achieved through some creativity with a glass rod and a laser pointer) would allow current speed calculations and analysis using particle image velocimetry (10).
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