Results 21 to 30 of about 63,006 (231)
Particle Imaging Velocimetry Gyroscope [PDF]
Sensors, 2019 Inertial measurement units (IMUs) are typically classified as per the performance of the gyroscopes within each system. Consequently, it is critical for a system to have a low bias instability to have better performance. Nonetheless, there is no IMU available commercially that does not actually suffer from bias-instability, even for the navigation ...
Ahmed A. Youssef, Naser El-Sheimy
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Adaptively monitoring streamflow using a stereo computer vision system [PDF]
Hydrology and Earth System Sciences, 2023 The gauging of free surface flows in waterways provides the foundation for monitoring and managing the water resources of built and natural environments.
N. R. Hutley +7 more
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Recent Advancements and Perspectives in UAS-Based Image Velocimetry
Drones, 2021 Videos acquired from Unmanned Aerial Systems (UAS) allow for monitoring river systems at high spatial and temporal resolutions providing unprecedented datasets for hydrological and hydraulic applications.
Silvano Fortunato Dal Sasso +2 more
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River Surface Velocimetry Based on Virtual River Dataset and Modulated-RAFT
IEEE Access, 2023 In recent years, there has been a surge of interest in image-based velocimetry methods for river surface velocity (RSV) estimation due to their efficiency and accuracy, including large-scale particle image velocimetry (LSPIV), space-time image ...
Yixin Wu +5 more
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Meta-uncertainty for particle image velocimetry [PDF]
Measurement Science and Technology, 2021 Abstract Uncertainty quantification for particle image velocimetry (PIV) is critical for comparing experimentally measured flow fields with computational fluid dynamics results, and model design and validation. However, PIV features a complex measurement chain with coupled, non-linear error sources, and quantifying the uncertainty is ...
Lalit K Rajendran +3 more
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Scientific 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
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Correlation image velocimetry: a spectral approach [PDF]
Applied Optics, 2002 A method, believed to be new, is introduced to evaluate displacement fields from the analysis of a deformed image compared with a reference image. In contrast to standard methods, which determine a piecewise constant displacement field, the present method gives direct access to spectral decomposition of the displacement field.
Roux, Stéphane +2 more
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Magnetic resonance imaging and velocimetry of ethane
Journal of Magnetic Resonance Open, 2023 This study investigates the experimental conditions required for magnetic resonance imaging (MRI) of thermally polarized hydrocarbon gas, focusing on ethane. The nuclear magnetic resonance (NMR) spectra and relaxation properties of ethane were analysed at different pressures in the range from 1.5 to 6 bar at 7 T using 1H NMR spectroscopy.
Maria Anikeeva +6 more
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Frequency division multiplexing for interferometric planar Doppler velocimetry [PDF]
, 2014 A new method of acquiring simultaneously the signal and reference channels used for interferometric planar Doppler velocimetry is proposed and demonstrated.
Bledowski, Ian A. +3 more
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Particle image velocimetry studies of bubble growth and detachment by high speed photography [PDF]
, 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
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