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
Particle velocimetry analysis of immiscible two-phase flow in micromodels
TL;DR: In this paper, the pore-scale velocity distributions are obtained for single-phase flow in porous media with a typical pore size of 5-40µm at a resolution of 1.8 μ m × 1. 8 μ m vector grid.
Journal ArticleDOI
Generation of model tissues with dendritic vascular networks via sacrificial laser-sintered carbohydrate templates
Ian S. Kinstlinger,Sarah Saxton,Gisele A. Calderon,Karen Vasquez Ruiz,David R. Yalacki,Palvasha R. Deme,Jessica E. Rosenkrantz,Jesse D. Louis-Rosenberg,Fredrik Johansson,Kevin D. Janson,Daniel W. Sazer,Saarang Panchavati,Karl-Dimiter Bissig,Kelly R. Stevens,Jordan S. Miller +14 more
TL;DR: It is shown that cell-laden hydrogels can be patterned with algorithmically generated dendritic vessel networks and other complex hierarchical networks by using sacrificial templates made from laser-sintered carbohydrate powders.
Journal ArticleDOI
Experiments on the water entry of asymmetric wedges using particle image velocimetry
TL;DR: In this article, an asymmetric wedge entering the water surface with an orthogonal velocity falling from a fixed height is characterized by particle image velocimetry (PIV), and the impact configuration significantly influences both the velocity and the pressure field, ultimately regulating the hydrodynamic loading on the wedge.
Journal ArticleDOI
Gravitational effect in evaporating binary microdroplets
Yaxing Li,Christian Diddens,Pengyu Lv,Herman Wijshoff,Michel Versluis,Detlef Lohse,Detlef Lohse +6 more
TL;DR: The flow in an evaporating glycerol-water binary submillimeter droplet with a Bond number Bo≪1 is studied both experimentally and numerically and it is shown that the Archimedes number Ar is the nondimensional control parameter for the occurrence of the gravitational effects.
Journal ArticleDOI
Calibration of the discrete element method: Strategies for spherical and non-spherical particles
TL;DR: In this paper, the authors used the discrete element method (DEM) for the modeling of granular materials and found that the drawdown test alone was sufficient to calibrate the coefficients of sliding and rolling friction, this was confirmed by the results from the rotating drum and shear tests.
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.