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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An experimental study of the flow characteristics and velocity fields in an operating room with laminar airflow ventilation
Tee Lin,Omid Ali Zargar,Kuan-Yu Lin,Oscar Juiña,Dexter Lyndon Sabusap,Shih-Cheng Hu,Graham Leggett +6 more
TL;DR: In this paper, the application of ceiling returns and skirts in order to prevent the recirculation is experimentally investigated, and the results show that the use of ceiling return can eliminate the recreculation.
Journal ArticleDOI
Subduction Zones Interaction Around the Adria Microplate and the Origin of the Apenninic Arc
Journal ArticleDOI
Insights Toward Characteristics of Merging Streams of Pedestrian Crowds Based on Experiments with Panicked Ants
TL;DR: It is suggested that merging layouts can lead to the creation of stop-and-go phenomena and cause significant variation in the velocities of the joining paths over time, and the findings provide a better understanding of the macroscopic characteristics of escaping flows in merging sections.
Journal ArticleDOI
Generation of vortices by gravity waves on a water surface
S. V. Filatov,S. A. Aliev,S. A. Aliev,A. A. Levchenko,A. A. Levchenko,D. A. Khramov,D. A. Khramov +6 more
TL;DR: In this article, it was shown that the vorticity amplitude on a water surface depends on the phase difference between the waves propagating at an angle of 90° with respect to each other and with a period of 360°.
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Internal flow patterns of a droplet pinned to the hydrophobic surfaces of a confined microchannel using micro-PIV and VOF simulations
Guang Yang,Guang Yang,Alexandros Terzis,I. Zarikos,S. Majid Hassanizadeh,Bernhard Weigand,Rainer Helmig +6 more
TL;DR: In this paper, both experimental results and numerical simulations of a droplet pinned to the hydrophobic surfaces of a confined microfluidic channel, as a result of contact angle hysteresis, are presented.
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.