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
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Towards an autologous iPSC-derived patient-on-a-chip
Anja Patricia Ramme,Leopold Koenig,Tobias Hasenberg,Christine Schwenk,Corinna Magauer,Daniel Faust,Alexandra Lorenz,Anna-Catharina Krebs,Christopher Drewell,Kerstin Schirrmann,Alexandra Vladetic,Grace-Chiaen Lin,Stephan Pabinger,Winfried Neuhaus,Frédéric Y. Bois,Roland Lauster,Uwe Marx,Eva-Maria Dehne +17 more
TL;DR: A four-organ chip based on human physiology that enables the interconnection of miniaturized human intestine, liver, brain and kidney equivalents is designed and will pave the way for disease induction and subsequent drug testing.
Journal ArticleDOI
Experimental investigation on the water entry of a bulbous bow based on TR-PIV
TL;DR: In this paper, the authors used time-resolved particle image velocimetry (TR-PIV) to capture the transient flow information during the bow slamming and estimated the instantaneous pressure by solving the incompressible Navier-Stokes equation using the Lagrangian approach.
Journal ArticleDOI
A 3D Bioprinted In Vitro Model of Pulmonary Artery Atresia to Evaluate Endothelial Cell Response to Microenvironment
Martin L. Tomov,Lilanni Perez,Liqun Ning,Huang Chen,Bowen Jing,Andrew Mingee,Sahar Ibrahim,Andrea S. Theus,Gabriella Kabboul,Katherine Pham Do,Sai Raviteja Bhamidipati,Jordan Fischbach,Kevin McCoy,Byron A. Zambrano,Jianyi Zhang,Reza Avazmohammadi,Athanasios Mantalaris,Brooks D. Lindsey,David Frakes,Lakshmi Prasad Dasi,Vahid Serpooshan,Holly Bauser-Heaton +21 more
TL;DR: In this article, an in vitro platform is used to model anastomosis in pulmonary arteries (PAs) and for procedural planning to reduce vascular restenosis, which can lead to direct clinical improvements in surgical planning for diseases of disturbed flow.
Journal ArticleDOI
Volume fraction and velocity fields of nearly uniform granular flows in a narrow channel geometry with smooth bed
TL;DR: In this paper, the velocity at the free surface and at the flume sidewall is measured by using a multi-pass particle image velocimetry (PIV) approach.
Journal ArticleDOI
Flow Pattern and Heat Transfer in a Cylindrical Annulus Under 1 g and Low-g Conditions: Experiments
Martin Meier,Marcel Jongmanns,Antoine Meyer,Torsten Seelig,Christoph Egbers,Innocent Mutabazi +5 more
TL;DR: In this article, the authors investigated the thermal convection in an annular cavity, with differentially heated inner and outer cylinders, under the influence of a dielectrophoretic (DEP) force.
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.