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
Some perspectives on the dynamic history of a material element
TL;DR: In this article, a criterion based on the dynamics of a material is developed to classify motions, which can be applied to second order tensor fields, Γ, chosen to describe the relation between material response, forces and kinematics.
Journal ArticleDOI
Characterization of Buoyant Fluorescent Particles for Field Observations of Water Flows
Flavia Tauro,Matteo Aureli,Maurizio Porfiri,Salvatore Grimaldi,Salvatore Grimaldi,Salvatore Grimaldi +5 more
TL;DR: This experimental characterization provides a first assessment of the feasibility of commercially available buoyant fluorescent beads in the analysis of high turbidity surface water flows, and may serve as a minimally invasive sensing system for hazardous events, such as pollutant diffusion in natural streams and flash flooding due to extreme rainfall.
Journal ArticleDOI
Large-eddy simulation and wind-tunnel measurement of aerodynamics and aeroacoustics of a horizontal-axis wind turbine
Kun Luo,Kun Luo,Sanxia Zhang,Zhi-ying Gao,Zhi-ying Gao,Jianwen Wang,Jianwen Wang,Liru Zhang,Liru Zhang,Renyu Yuan,Jianren Fan,Kefa Cen +11 more
TL;DR: In this paper, a large-eddy simulation of the whole three-dimensional vortex dynamics and noise radiation around a horizontal-axis wind turbine has been studied and analyzed together with wind-tunnel experimental measurement.
Journal ArticleDOI
A simple, inexpensive system for digital particle image velocimetry (DPIV) in biomechanics.
William G Ryerson,Kurt Schwenk +1 more
TL;DR: A simple DPIV system that substitutes widely available, inexpensive consumer components for scientific-grade equipment to achieve low cost and high accuracy is described and has been employed successfully in studies on the fluid dynamics of chemosensory tongue-flicking in snakes.
Journal ArticleDOI
Evaluation of unsteady pressure fields and forces in rotating airfoils from time-resolved PIV
Arturo Villegas,F. J. Diez +1 more
TL;DR: In this paper, the instantaneous pressure fields and aerodynamic loads are obtained for rotating airfoils from time-resolved particle image velocimetry (TR-PIV) measurements, which allowed evaluating the contribution from the local acceleration (unsteady acceleration) to the instantaneous forces.
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.