PIVlab – Towards User-friendly, Affordable and Accurate Digital Particle Image Velocimetry in MATLAB
William Thielicke,Eize Stamhuis +1 more
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TLDR
The accuracy of several algorithms was determined and the best performing methods were implemented in a user-friendly open-source tool for performing DPIV flow analysis in Matlab.Abstract:
Digital particle image velocimetry (DPIV) is a non-intrusive analysis technique that is very popular for mapping flows quantitatively. To get accurate results, in particular in complex flow fields, a number of challenges have to be faced and solved: The quality of the flow measurements is affected by computational details such as image pre-conditioning, sub-pixel peak estimators, data validation procedures, interpolation algorithms and smoothing methods. The accuracy of several algorithms was determined and the best performing methods were implemented in a user-friendly open-source tool for performing DPIV flow analysis in Matlab.read more
Citations
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Come together: On-chip bioelectric wound closure.
TL;DR: In this article, a biomimetic convergent field geometry that more closely resembles actual wound fields was used to accelerate wound healing using electrotaxis, which was shown to close a 1.5mm gap between two large (30mm2) layers of primary skin keratinocyte.
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Estimation of shear rate change in vertically oscillating non-Newtonian fluids: Predictions on particle settling
TL;DR: In this paper, the effect of oscillatory motion on velocity and shear rate change within different non-Newtonian, slightly viscoelastic fluids oscillated in a vertical U-shaped circular pipe was investigated.
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A Technique for Registering Wave and Vortex Motions on a Liquid Surface
TL;DR: In this article, a technique that allows simultaneous measurements of vortex and wave motions of fluids is described, where a liquid surface is decorated with light particles of PA-12 polyamide with an average diameter of 30 μm.
Journal ArticleDOI
Three-dimensional characteristics of the jet flows induced by a pitching plate in a quiescent fluid
TL;DR: In this article, a combined experimental and numerical study on the 3D characteristics of the mean jet downstream of a harmonically pitching cantilever plate in quiescent fluid is presented.
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Experimental study of flow structures of a solitary wave propagating over a submerged thin plate in different angles using PIV technique
TL;DR: In this article, an experimental investigation into the interaction of a solitary wave and a submerged thin plate under different angles was conducted to measure velocity and vorticity by using the Particle Image Velocimetry (PIV) technique.
References
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Journal ArticleDOI
The Design and Implementation of FFTW3
Matteo Frigo,Steven G. Johnson +1 more
TL;DR: It is shown that such an approach can yield an implementation of the discrete Fourier transform that is competitive with hand-optimized libraries, and the software structure that makes the current FFTW3 version flexible and adaptive is described.
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
Particle-Imaging Techniques for Experimental Fluid Mechanics
TL;DR: A review of these methods can be found in articles by Lauterborn & Vogel (1984), Adrian (1986a), Hesselink (1988), and Dudderar et al..
Journal ArticleDOI
Adaptive histogram equalization and its variations
Stephen M. Pizer,Stephen M. Pizer,E. Philip Amburn,E. Philip Amburn,John D. Austin,Robert Cromartie,Ari Geselowitz,Ari Geselowitz,Trey Greer,Bart M. ter Haar Romeny,John B. Zimmerman,John B. Zimmerman +11 more
TL;DR: It is concluded that clipped ahe should become a method of choice in medical imaging and probably also in other areas of digital imaging, and that clip ahe can be made adequately fast to be routinely applied in the normal display sequence.
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.