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
Double cascade turbulence and Richardson dispersion in a horizontal fluid flow induced by Faraday waves
TL;DR: The energy spectra and the mean spectral energy flux obtained from particle image velocimetry data suggest an inverse energy cascade with Kolmogorov type scaling E(k) ∝ k(γ), γ ≈ -3 enstrophy cascade.
Journal ArticleDOI
Particle image velocimetry (PIV) uncertainty quantification using moment of correlation (MC) plane
TL;DR: In this article, the second order moment of the correlation (MC) was used to estimate the PIV uncertainty from the shape of the cross-correlation plane, and the predicted uncertainties showed good sensitivity to the error sources and agreement with the expected RMS error.
Journal ArticleDOI
Non-intrusive load characterization of an airfoil using PIV
TL;DR: An assessment is made of the feasibility of using PIV velocity data for the non-intrusive aerodynamic force characterization (lift, drag and pitching moment) of an airfoil, and the PIV approach is validated against standard pressure-based methods.
Journal ArticleDOI
A low-cost airborne velocimetry system: proof of concept
Martin Detert,Volker Weitbrecht +1 more
TL;DR: In this article, a low-cost airborne velocimetry system was used to measure large-scale surface velocity fields using an ultra-light action-cam and a ready-to-fly quadrocopter.
Book ChapterDOI
Overview of PIV in supersonic Flows
TL;DR: In this paper, the physical and technical problems of particle image velocimetry in high-speed wind tunnels are reviewed and discussed on the basis of recent experiments performed in high speed wind tunnels: double compression ramp at Mach 7 and shock-wave turbulent boundary interaction at Mach 2.
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.