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
Study on the dynamic mechanism of soil desiccation cracking by surface strain/displacement analysis
TL;DR: In this paper , a real-time digital camera was used to record the dynamic process of soil desiccation cracks in real time, and the relationship between the strain/displacement field and cracks were analyzed.
Journal ArticleDOI
Effect of vortex shedding in unsteady aerodynamic forces for a low Reynolds number stationary wing at low angle of attack
Arturo Villegas,F. J. Diez +1 more
TL;DR: In this article, the authors investigated the relation between wake vortex shedding and aerodynamic force fluctuations for a low Reynolds number wing from time resolved particle image velocimetry (TR-PIV) experimental measurements.
Posted Content
Parametric Analysis of Smartphone Camera for a Low Cost Particle Image Velocimetry System
TL;DR: Assessing smartphone camera characteristics for developing an economic smartphone-based Particle Image Velocimetry (PIV) system found that a higher frame rate results in greater accuracy of the measurement, and an exposure compensation and an ISO of 400 was found to produce results with the least error.
DissertationDOI
An Experimental and Theoretical Study of Active Flow Control
TL;DR: In this article, a high-lift airfoil design is combined with active flow control, and an extensive wind tunnel study is carried out to reveal that the internal driving mechanism is far stronger than the fluid dynamic interactions at the outlet, resulting in a completely independent jet behavior.
Journal ArticleDOI
Uncertainty analysis of PIV measurements in bubbly flows considering sampling and bubble effects with ray optics modeling
TL;DR: In this article, a modeling-based approach is developed to investigate the external sources of uncertainty in particle image velocimetry (PIV) measurements for two-phase bubbly flows.
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.