Adaptive particle image velocimetry based on sharpness metrics
Journal 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
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Robust Image-Based Streamflow Measurements for Real-Time Continuous Monitoring
Frontiers 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
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Assessing different imaging velocimetry techniques to measure shallow runoff velocities during rain events using an urban drainage physical model [PDF]
Hydrology 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
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PIVlab – Towards User-friendly, Affordable and Accurate Digital Particle Image Velocimetry in MATLAB
, 2014 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 ...
W. Thielicke, E. Stamhuis
semanticscholar +1 more source
Ultrasound Imaging Velocimetry: a review [PDF]
Experiments in Fluids, 2016 Whole-field velocity measurement techniques based on ultrasound imaging (a.k.a. ‘ultrasound imaging velocimetry’ or ‘echo-PIV’) have received significant attention from the fluid mechanics community in the last decade, in particular because of their ability to obtain velocity fields in flows that elude characterisation by conventional optical methods ...
openaire +3 more sources
Particle image velocimetry - Classical operating rules from today’s perspective
, 2020 Over the last four decades, particle image velocimetry (PIV) has evolved into a powerful and significant measurement technique. The technique has been applied to many areas of fluid mechanics and the accuracy and resolution has been greatly improved over
S. Scharnowski, C. Kähler
semanticscholar +1 more source
4-D Echo-Particle Image Velocimetry in a Left Ventricular Phantom.
Ultrasound in Medicine and Biology, 2020 Left ventricular (LV) blood flow is an inherently complex time-varying 3-D phenomenon, where 2-D quantification often ignores the effect of out-of-plane motion.
J. Voorneveld +11 more
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How to Avoid and Correct Biased Riverine Surface Image Velocimetry
Water Resources Research, 2020 Because digital image data acquisition has become low cost and various image analysis tools have become available, the number of image‐based measurement applications is increasing and so is the number of misleading applications.
M. Detert
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Image-Based Experimental Measurement Techniques to Characterize Velocity Fields in Blood Microflows
Frontiers in Physiology, 2022 Predicting blood microflow in both simple and complex geometries is challenging because of the composition and behavior of the blood at microscale. However, characterization of the velocity in microchannels is the key for gaining insights into cellular ...
Andy Vinh Le +2 more
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Feasibility of Optical Flow Field Measurements of the Coolant in a Grinding Machine
Applied Sciences, 2021 For industrial grinding processes, the workpiece cooling by metalworking fluids, which strongly influences the workpiece surface layer quality, is not yet fully understood.
Björn Espenhahn +5 more
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