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.
References in periodicals archive ?
Particle image velocimetry measurement of indoor airflow field: A review of the technologies and applications.
Particle Image Velocimetry for Characterizing the Flow Structure in Two-Dimensional Gas-Liquid-Solid Fluidized Beds.
Two non-invasive, optical measuring techniques, namely Particle Image Velocimetry (PIV) and Digital Image Analysis (DIA), have been combined to obtain the instantaneous emulsion phase velocity profiles (in a pseudo-2-D bed because of the required visual accessibility) together with detailed information on the bubble phase (local bubble size and velocity distribution and bubble fraction), which allows investigating the mutual interaction between the bubble and emulsion phase in detail.
Ligament disintegration and velocity profiles are examined in this study using a particle image velocimetry (PIV) technique.
Contract award: a particle image velocimetry (piv) time-resolved.
In the particle image velocimetry (PIV) technique, an ND:Yag laser is used in combination with sheet generating optics to illuminate the cross-section of the flow of interest.
They also used particle image velocimetry (PIV), a flow-measuring method used in fluid mechanics, to quantitatively analyze the flow around the hummingbirds.
Therefore, the primary diagnostic in this study is planar digital particle image velocimetry (DPTV) [2].
Direct evaluation in a nonintrusive way of the flow pattern in nonreacting flow in a swirl burner is of great significance, both from the design point of view and the modelling of the combustion devices with Computational Fluid Dynamics (CFD) software and with modern experimental investigation techniques like Particle Image Velocimetry (PIV).
Particle image velocimetry (PIV), particle tracking velocimetry (PTV), and other global-wise techniques, which have been intensively studied in recent years, can measure fluid velocities over the flow field or, in other words, a global domain.
The final chapter covers experimental methods for unsteady flow applications, including image-based experimental methods, unsteady airfoil experiments, quantitative analysis of animal-generated flow patters using digital particle image velocimetry, and measurement using temperature and pressure sensitive coatings.
Finally, the measurement of liquid flow patterns of single to quadruple bubbling orifices using the particle image velocimetry (PIV) are presented and discussed.

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