PIVlab – Towards User-friendly, Affordable and Accurate Digital Particle Image Velocimetry in MATLAB
William Thielicke,Eize Stamhuis +1 more
Reads0
Chats0
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
More filters
Journal ArticleDOI
Isolating strain and curvature effects in premixed flame/vortex interactions
Fabien Thiesset,Fabien Halter,Chaimae Bariki,Corentin Lapeyre,Christian Chauveau,Iskender Gökalp,Laurent Selle,Thierry Poinsot +7 more
TL;DR: In this paper, a method based on a budget of fuel on a well chosen domain is proposed and validated both experimentally and numerically using two-dimensional direct numerical simulations of flame/vortex interactions.
Journal ArticleDOI
Resonant dielectrophoresis and electrohydrodynamics for high-sensitivity impedance detection of whole-cell bacteria
TL;DR: Electrode CMOS compatibility confers portability, miniaturization and affordability capabilities for building point-of-care (PoC) diagnostic tests in a lab-on-a-chip (LoC).
Journal ArticleDOI
Flowing dusty plasma experiments: generation of flow and measurement techniques
TL;DR: A variety of experimental techniques for the generation of subsonic/supersonic dust fluid flows and means of measuring such flow velocities are presented in this article, which can be usefully employed in laboratory devices to investigate linear and non-linear collective excitations in a flowing dusty plasma.
Journal ArticleDOI
Investigation of clogging in porous media induced by microorganisms using a microfluidic application
TL;DR: In this paper, the authors investigated the effect of bacteria and their metabolism products on clogging using micromodels under elevated pressure and temperature and anaerobic conditions, and found that in situ bacteria growth, biomass accumulation, biofilm formation and gas production were observed in the micrommodel throughout the flooding experiments.
Journal ArticleDOI
Flow field around a confined active droplet
TL;DR: In this article, the velocity field around a droplet swimming close to a wall was measured to demonstrate the critical impact of confinement on the velocity of the droplet in the water.
References
More filters
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.