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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Flow over hydrofoils with varying hydrophobicity
TL;DR: In this article, the effect of hydrophobicity on the flow dynamics of NACA0015 hydrofoil based on more than 100 particle image velocimetry based experiments was reported.
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Electroosmotic flow measurements in a freely suspended liquid film: Experimhents and numerical simulations.
TL;DR: Overall, electroosmotic flow profiles within a free liquid film are similar to that of the closed‐end solid microchannel, however, the flow direction and features of the velocity profiles can be changed by selecting various types of surfactants.
Journal ArticleDOI
Miniaturisation of the toroidal fluidisation concept using 3D printing
TL;DR: In this paper, the authors used the stereolithography printing technique to fabricate a toroidal fluidized bed (TORBED) at the smallest scale ever achieved (50mm diameter with 10mm annular width).
Journal ArticleDOI
Correlation and spectrum of dust acoustic waves in a radio-frequency plasma using PK-4 on the International Space Station
John Goree,Bin Liu,Mikhail Pustylnik,Hubertus M. Thomas,Vladimir E. Fortov,Andrey M. Lipaev,Vladimir Molotkov,A. D. Usachev,Oleg F. Petrov,Markus H. Thoma,Edward Thomas,Uwe Konopka,S. Prokopiev +12 more
TL;DR: In this article, a three-dimensional dust cloud was confined in a glow-discharge plasma powered by a radio-frequency coil in low-pressure neon gas, and low-frequency dust acoustic waves (DAWs) were spontaneously excited due to the flowing ions in the plasma.
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Lateral magma migration through interconnected sills: Evidence from analogue modeling
TL;DR: In this paper, the authors explore the capability of interconnected sills to transport magma in the shallow crust, as well as the effect of simultaneous and temporally separated multiple magma emplacement on deformation pattern.
References
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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.