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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Journal ArticleDOI
Topological Stabilization and Dynamics of Self-Propelling Nematic Shells.
Babak Vajdi Hokmabad,Babak Vajdi Hokmabad,Kyle A. Baldwin,Kyle A. Baldwin,Carsten Krüger,Christian Bahr,Corinna C. Maass +6 more
TL;DR: It is demonstrated, through experiments and simulations, that anisotropic elasticity can counterbalance the destabilizing effect of viscous drag induced by shell motility and inhibit rupturing.
Journal ArticleDOI
Particle image velocimetry measurements of the flow in the converging region of two parallel jets
TL;DR: In this article, the authors used particle image velocimetry (PIV) to provide benchmark data for resolving a simultaneous flow field in the converging region of two submerged parallel jets issued from rectangular channels.
Journal ArticleDOI
Image velocimetry and spectral analysis enable quantitative characterization of larval zebrafish gut motility.
Julia Ganz,Ryan P. Baker,M. Kristina Hamilton,Ellie Melancon,Parham Diba,Judith S. Eisen,Raghuveer Parthasarathy +6 more
TL;DR: The imaging and characterization of gut motility, especially regarding periodic, propagative contractions driving material transport, are critical goals and robust measures of contraction magnitude remain challenging to obtain.
Journal ArticleDOI
Viscous resistance in drop coalescence
TL;DR: In this article, the authors used particle image velocimetry for two-dimensional (sandwiched) drop coalescence and developed a scaling law that was validated through experimentation.
Journal ArticleDOI
Minimally disruptive needle insertion: a biologically inspired solution
TL;DR: This work presents a method of reducing the disruptiveness of insertions by mimicking the burrowing mechanism of ovipositing wasps, which will have significant impact on both the safety and targeting accuracy of percutaneous interventions along both straight and curved trajectories.
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.