Results 31 to 40 of about 3,041 (178)

Measurement and analysis of the internal flow field in the hydrodynamic torque converter with adjustable guide vanes

Advances in Mechanical Engineering, 2015
This article presents a particle-tracking velocimetry experiment for studying internal flows of hydrodynamic torque converter whose guide vanes are adjustable. The torque converter in which the flow region is an enclosed space with multiple impellers has
Ma Wenxing, Liu Hao, Liu Chunbao, Liu Changsuo   +3 more
doaj   +1 more source

Use of Particle Tracking Velocimetry for Measurements of Granular Flows: Review and Application

KONA Powder and Particle Journal, 2014
A brief review of publications that deal with particle image velocimetry (PIV) and particle tracking velocimetry (PTV) is presented first in this paper.
Nirma Jesuthasan, B. Rabi Baliga, Stuart B. Savage   +2 more
doaj   +1 more source

Optimizing Velocity Field Measurement with 3D-Printed Particles and MATLAB: A Cost-Effective System for Flow Visualization

Aerospace
This article aims to highlight the importance of including quantitative measurements when conducting flow visualization tests, such as those performed in towing tanks, within fluid mechanics analysis. It investigates the possibility of measuring velocity
José Juan Aliaga-Maraver, Ángel Antonio Rodríguez-Sevillano, María Jesús Casati-Calzada, Rafael Bardera-Mora, Estela Barroso-Barderas, Juan Carlos García-Matías, Alfonso Láinez-Muñiz, Davide Visentin   +7 more
doaj   +1 more source

Optically trapped particle tracking velocimetry

Physical Review Fluids
In this paper, we propose a microflow velocimetry based on particle tracking with the aid of optical trapping of tracers, namely, (ot-PTV). The ot-PTV has two phases: a trap phase, in which individual tracers are trapped by an optical force and held at a measurement position; and a release phase, in which the tracer is released and advected by the ...
Tetsuro Tsuji, Shoma Hashimoto, Satoshi Taguchi   +2 more
openaire   +2 more sources

Errors in particle tracking velocimetry with high-speed cameras [PDF]

Review of Scientific Instruments, 2011
Velocity errors in particle tracking velocimetry (PTV) are studied. When using high-speed video cameras, the velocity error may increase at a high camera frame rate. This increase in velocity error is due to particle-position uncertainty, which is one of the two sources of velocity errors studied here. The other source of error is particle acceleration,
Feng, Yan, Goree, J., Liu, Bin
openaire   +3 more sources

Patient‐Derived 3D Heart‐On‐a‐Chip Model of Dilated Cardiomyopathy With Embedded Bead‐Based Mapping of Tissue Contractility

Advanced Healthcare Materials, EarlyView.
A heart‐on‐a‐chip model of dilated cardiomyopathy is developed from patient‐derived induced pluripotent stem cells. The model recapitulates key disease phenotypes and enables functional assessment through integrated bead‐based tracking and pillar deflection measurements.
Ali Mousavi, Ludovic Mouttet, Shihao Cui, Yasaman Hekmatnia, Mehran Mottahedi, Ida Derish, Naimeh Rafatian, Mark Aurousseau, Gregor Andelfinger, Renzo Cecere, Houman Savoji   +10 more
wiley   +1 more source

'DefocusTracker': A Modular Toolbox for Defocusing-based, Single-Camera, 3D Particle Tracking

Journal of Open Research Software, 2021
The need for single-camera 3D particle tracking methods is growing, among others, due to the increasing focus in biomedical research often relying on single-plane microscopy imaging.
Rune Barnkob, Massimiliano Rossi
doaj   +1 more source

Photoactive Tweezers

Advanced Materials, EarlyView.
A photoactive tweezers system based on photoactive colloids is developed and systematically investigated in this study. Through experimental and theoretical methods, we demonstrate that the photoredox reaction catalyzed by a dye‐sensitized TiO2 particle generates a strong positive phototaxis, enabling self‐entrapment in the beam center.
Jingyuan Chen, Qingxin Guo, Shiwei Zhang, Donghao Cui, Changjin Wu, Pei Xu, Wei Wang, Kai Lou, Binglin Zeng, Jinyao Tang   +9 more
wiley   +1 more source

Potential for application of an acoustic camera in particle tracking velocimetry [PDF]

Review of Scientific Instruments, 2008
We explored the potential and limitations for applying an acoustic camera as the imaging instrument of particle tracking velocimetry. The strength of the acoustic camera is its usability in low-visibility environments where conventional optical cameras are ineffective, while its applicability is limited by lower temporal and spatial resolutions.
Wu, Fu-Chun, Shao, Yun-Chuan, Wang, Chi-Kuei, Liou, Jim   +3 more
openaire   +3 more sources

Flow characteristics and regime transitions in fluidization systems of Group C+ particles

AIChE Journal, EarlyView.
Abstract Fine and ultrafine particles are attractive for fluidized bed reactors because their high surface area benefits catalytic processes, but their cohesive nature complicates regime characterization. Nanoparticle modulation improves the flowability of Group C powders, yet their bubbling to turbulent transition remains unclear.
Yue Song, Jiaying Wang, Xiaoyang Wei, Jesse Zhu   +3 more
wiley   +1 more source