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
Wavelet-Based Optical Flow for Two-Component Wind Field Estimation from Single Aerosol Lidar Data
TL;DR: In this article, a wavelet-based optical flow estimator named Typhoon was applied to image sequences produced by a horizontally scanning elastic backscatter lidar to produce dense two-component vector flow fields that correspond to the apparent motion of microscale aerosol features.
Journal ArticleDOI
Hybrid particle image velocimetry with the combination of cross-correlation and optical flow method
Zifeng Yang,Mark Johnson +1 more
TL;DR: The hybrid Particle Image Velocimetry (PIV) method utilizes the state-of-the-art cross-correlation method to account for the relatively large displacements of particles and refine the flow field using the high-resolution analysis of OFM.
Journal ArticleDOI
3D mapping of microfluidic flow in laboratory-on-a-chip structures using optical tweezers.
Hasan Mushfique,Jonathan Leach,Huabing Yin,Roberto Di Leonardo,Miles J. Padgett,Jonathan M. Cooper +5 more
TL;DR: In this article, optical tweezers are used to measure the velocity vectors of flow fields in two and three dimensions around a microstructures including both molded features within channels and cells.
Journal ArticleDOI
An innovative application of the Kinect in Earth sciences: quantifying deformation in analogue modelling of volcanoes
TL;DR: In this article, the authors used the Kinect sensor to measure vertical deformation in a scaled analogue model of Nisyros volcano (Greece), simulating two magmatic sources and related surface deformation.
Journal ArticleDOI
LCD-projector-based 3D color PTV
TL;DR: In this article, a color-based three-dimensional (3D) Particle Tracking Velocimetry (PTV) using a single camera and an liquid crystal display (LCD) projector, which can measure the out-of-plane velocity component from particle color information, is improved for practical use in 3D velocimetric without losing the original simplicity on the optical configuration of 2D PTV.
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.