Results 21 to 30 of about 132,352,308 (329)
2D velocity vector profile measurement on bubbly flow using ultrasonic technique
Mechanical Engineering Journal, 2020 This paper describes a measurement technique for a two-dimensional (2D) velocity vector profile in the two-phase bubbly flow. The Ultrasonic Velocity Profiler (UVP) method, which is a nonintrusive technique applicable for real-time measurement, is ...
Wongsakorn WONGSAROJ +4 more
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Applied Sciences, 2023 Aiming at the problem of poor spatial resolution of low-frequency noise sources in a small-aperture spherical microphone array (SMA), this paper proposes a method for localizing and identifying low-frequency noise sources based on virtual-vector open SMA
Boquan Yang +3 more
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Sensors, 2023 The integrated system with the strapdown inertial navigation system (SINS) and the global positioning system (GPS) is the most popular navigation mode. It has been used in many navigation fields.
Yukun Wang, Xiuli Ning, Xiang Xu
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Vector Aeroacoustics for Uniform Mean Flow: Acoustic Velocity and Vortical Velocity [PDF]
AIAA Journal, 2018 Acoustic and vortical disturbances in uniform mean flow bounded with solid surfaces are investigated in this paper.
Mao, Yijun +3 more
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Vector Current Measurement Using Doppler Scatterometry with Optimally Selected Observation Azimuths
Remote Sensing, 2021 The Doppler scatterometer is a new style of remote sensing tool that can provide current measurements over a wide swath for rapid global coverage. The existing current estimation method for Doppler scatterometry uses the maximum likelihood method to ...
Weifeng Sun +4 more
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Three-dimensional acoustic vector field model using Gaussian beam tracing [PDF]
JASA Express Letters, 2023 A three-dimensional acoustic vector field model was developed using Gaussian beam tracing. The field at any location is computed by coherently summing all contributing beams, where the beam equation of particle velocity depends only on beam width and ...
Yuchen Chen, Minghui Zhang, Lijia Gong
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Ultrasound International Open, 2019 Purpose Stenosis of the superficial femoral artery (SFA) induces complex blood flow with increased velocities. Disease assessment is performed with Doppler ultrasound and digital subtraction angiography (DSA), but Doppler ultrasound is limited by angle ...
K. Hansen +5 more
semanticscholar +1 more source
Velocities, Stresses and Vector Bundle Valued Chains [PDF]
Journal of Elasticity, 2011 A mathematical framework for the fundamental objects of continuum mechanics is presented. In the geometric setting of general differentiable manifolds, velocity fields over bodies, modeled as sections of a vector bundle W, are generalized using notions of homological integration theory such as flat chains and cochains.
Segev, Reuven, Falach, Lior
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Properties of the Acoustic Vector Field near the Underwater Planar Cavity Baffle and Its Application
Journal of Marine Science and Engineering, 2022 In order to apply the acoustic vector hydrophone on a ship, the properties of the acoustic vector field near the underwater planar cavity baffle are studied based on the Euler description and Lagrange description.
Hongyue Chen, Zhongrui Zhu, Desen Yang
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An approach to minimize aircraft motion bias in multi-hole probe wind measurements made by small unmanned aerial systems [PDF]
Atmospheric Measurement Techniques, 2021 A multi-hole probe mounted on an aircraft provides the air velocity vector relative to the aircraft, requiring knowledge of the aircraft spatial orientation (e.g., Euler angles), translational velocity and angular velocity to translate this information
L. Al-Ghussain, S. C. C. Bailey
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