Journal ArticleDOI
Twenty years of particle image velocimetry
TLDR
The development of the method of particle image velocimetry (PIV) is traced by describing some of the milestones that have enabled new and/or better measurements to be made.Abstract:
The development of the method of particle image velocimetry (PIV) is traced by describing some of the milestones that have enabled new and/or better measurements to be made. The current status of PIV is summarized, and some goals for future advances are addressed.read more
Citations
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Journal ArticleDOI
Atmospheric Motion Vectors Derived from an Infrared Window Channel of a Geostationary Satellite Using Particle Image Velocimetry
TL;DR: As the new generation geostationary satellite Himawari-8 provides a greater frequency and more observation channels than its predecessor, the Multifunctional Transport Satellite series (e.g. as mentioned in this paper ).
Surface Pressure Measurements using Coaxial Volumetric Velocimetry: Investigation on an Inverted Wing in Ground Effect
TL;DR: In this article, the authors used particle image velocimetry (PIV) to obtain the velocity field of an inverted wing in ground effect by robotic manipulation, which is then compared with the readings obtained from pressure taps.
Journal ArticleDOI
High-repetition-rate krypton tagging velocimetry in Mach-6 hypersonic flows
TL;DR: In this paper , a two-excitation beam approach was proposed to enhance the performance of krypton tagging velocimetry in a Mach-6 Ludwieg tube using a burstmode laser-pumped optical parametric oscillator system.
Posted ContentDOI
Spatial distribution of tracers for optical sensing of stream surface flow
TL;DR: In this article, numerical simulations were performed to consider different levels of particle aggregation, particle color (in terms of greyscale intensity), seeding density, and background noise, and an error reduction of about 15.9 and 16.1% was calculated by employing the optimal frame window.
Journal ArticleDOI
Convection and correlation of coherent structure in turbulent boundary layer using tomographic particle image velocimetry
TL;DR: In this article, the scale-dependencies of convection velocity and sweep velocity in turbulent boundary layer over a flat wall were investigated and the conditionally-averaged coherent structures systemically illustrate the key roles of hairpin vortice in the turbulence dynamic events.
References
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Book
Particle Image Velocimetry: A Practical Guide
TL;DR: In this paper, the authors present a practical guide for the planning, performance and understanding of experiments employing the PIV technique, which is primarily intended for engineers, scientists and students, who already have some basic knowledge of fluid mechanics and nonintrusive optical measurement techniques.
Journal ArticleDOI
Digital Particle Image Velocimetry
Christian Willert,Morteza Gharib +1 more
TL;DR: In this article, the directional ambiguity associated with PIV and LSV is resolved by implementing local spatial cross-correlations between two sequential single-exposed particle images, and the recovered velocity data are used to compute the spatial and temporal vorticity distribution and the circulation of the vortex ring.
Book ChapterDOI
Particle Image Velocimetry
TL;DR: In this paper, the authors use hot-wire (HW) or laser velocimetry (LV) to estimate the velocity, vorticity, and pressure fields of wake flows.
Journal ArticleDOI
Determination of displacements using an improved digital correlation method
TL;DR: An improved digital correlation method is presented for obtaining the full-field in-plane deformations of an object by numerically correlating a selected subset from the digitized intensity pattern of the undeformed object.
Journal ArticleDOI
Fundamentals of digital particle image velocimetry
TL;DR: In this paper, the measurement principle of digital particle image velocimetry (PIV) is described in terms of linear system theory and conditions for PIV correlation analysis as a valid interrogation method are determined.