Results 21 to 30 of about 61,839 (207)

Experimental flows through an array of emerged or slightly submerged square cylinders over a rough bed

open access: yesScientific Data, 2021
Measurement(s) velocity • depth of water Technology Type(s) particle-image velocimetry • ultrasonic velocimetry • ultrasonic transit time probe Factor Type(s) square cylinder immersion rate Machine-accessible metadata file describing the reported data ...
Marina Oukacine   +3 more
doaj   +1 more source

Comparison of PIV measurements and a discrete particle model in a rectangular 3D spout-fluid bed [PDF]

open access: yes, 2004
Particle image velocimetry and a 3D hard sphere discrete particle model were applied to determine particle velocity profiles in the plane around a spout in a spoutfluid bed for various initial bed heights, spout and background fluidization velocities ...
Deen, N.G., Kuipers, J.A.M., Link, J.M.
core   +10 more sources

Particle image velocimetry studies of bubble growth and detachment by high speed photography [PDF]

open access: yes, 1997
An understanding of bubble flows is important in the design of process equipment, particularly in the chemical and power industries. In vapour-liquid processes the mass and heat transfer between the phases is dominated by the liquid-vapour interface and ...
Dempster, William   +3 more
core   +1 more source

Diffeomorphic Particle Image Velocimetry [PDF]

open access: yesIEEE Transactions on Instrumentation and Measurement, 2022
Preprint, under ...
Yong Lee, Shuang Mei
openaire   +2 more sources

Assessing different imaging velocimetry techniques to measure shallow runoff velocities during rain events using an urban drainage physical model [PDF]

open access: yesHydrology and Earth System Sciences, 2021
Although surface velocities are key in the calibration of physically based urban drainage models, the shallow water depths developed during non-extreme precipitation and the potential risks during flood events limit the availability of this type of data ...
J. Naves   +3 more
doaj   +1 more source

Adaptive particle image velocimetry based on sharpness metrics

open access: yesJournal of the European Optical Society-Rapid Publications, 2018
Background Optical distortions can significantly deteriorate the measurement accuracy in particle image velocimetry systems. Such distortions can occur at fluctuating phase boundaries during flow measurement and result from the accompanied refractive ...
M. Teich   +4 more
doaj   +1 more source

Robust Image-Based Streamflow Measurements for Real-Time Continuous Monitoring

open access: yesFrontiers in Water, 2021
The volumetric flow rate in rivers is essential to analyze hydrological processes and at the same time it is one of the most difficult variables to measure. Image based discharge measurements possess several advantages, one of them being that the sensor (
Salvador Peña-Haro   +4 more
doaj   +1 more source

Metrics for the Quantification of Seeding Characteristics to Enhance Image Velocimetry Performance in Rivers

open access: yesRemote Sensing, 2020
River flow monitoring is essential for many hydraulic and hydrologic applications related to water resource management and flood forecasting. Currently, unmanned aerial systems (UASs) combined with image velocimetry techniques provide a significant low ...
Silvano Fortunato Dal Sasso   +2 more
doaj   +1 more source

Four-dimensional dynamic flow measurement by holographic particle image velocimetry [PDF]

open access: yes, 2005
The ultimate goal of holographic particle image velocimetry (HPIV) is to provide space- and time-resolved measurement of complex flows. Recent new understanding of holographic imaging of small particles, pertaining to intrinsic aberration and noise in ...
Meng, Hui, Pu, Ye
core   +2 more sources

Single camera 3D planar Doppler velocity measurements, using two frequency planar Doppler velocimetry (2v-PDV) and imaging fibre bundles [PDF]

open access: yes, 2006
A modified Planar Doppler Velocimetry (PDV) technique, two frequency PDV (2v-PDV), is described that allows measurements of the velocity field over a plane defined by a laser light sheet using sequential illumination of the flow with two closely ...
Charrett, Thomas O. H.   +2 more
core   +1 more source

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