Results 31 to 40 of about 34,049 (217)

Unsupervised Particle Image Velocimetry Network Based on Improved LiteFlowNet3 with Embedded Cross-correlation and H-RAMi Attention Mechanism [PDF]

Journal of Applied Fluid Mechanics
Unsupervised particle image velocimetry (PIV) methods eliminate the need for extensive labeled datasets, yet their performance in complex flow regions, such as those with particle occlusion or out-of-boundary motion, remains limited.
J. Ni, Z. Zhou
doaj   +1 more source

Experimental study of the flow field in patient specific lower airways [PDF]

, 2009
In this study Particle Image Velocimetry (PIV) is used to visualize and measure airflow in the lower airways. Using Rapid Prototyping Manufacturing (RPM) technology, a hydraulic in vitro model was developed and constructed.
Claessens, Tom, Van Holsbeke, Cedric, Van Ransbeeck, Peter, Verdonck, Pascal, Vermeulen, Mathias   +4 more
core  

A Non‐Reciprocal Architected Porous Medium

Advanced Functional Materials, EarlyView.
ABSTRACT In several fluid flow, energy‐dumping, and energy‐harvesting applications, a dominant flow direction or dominant resistance direction is desirable. In this study, we propose a simple modular geometry that doubles flow resistance in one direction relative to the opposite direction, while maintaining laminar viscous flow.
Clément Vezies, Pablo Zavattieri, Nicolás Silin   +2 more
wiley   +1 more source

Enhancing the delivery of Fluid Mechanics education through the use of low-cost phone-based particle streak velocimetry

South African Journal of Chemical Engineering
To enhance the delivery of Fluid mMechanics, engineering instructors have found practical laboratory experiments to be a useful complementary tool. Various experimental methods have been adopted with recent interest being in the use of low-cost particle ...
Jeffrey K. Muriithi, Fabian Nachbur, Josephat K. Tanui, Godfrey K. Gakingo   +3 more
doaj   +1 more source

Considerations When Applying Large-Scale PIV and PTV for Determining River Flow Velocity

Frontiers in Water, 2021
Large-scale image velocimetry is a novel approach for non-contact remote sensing of flow in rivers. Research within this topic has largely focussed on developing specific aspects of the image velocimetry work-flow, or alternatively, testing specific ...
Martin J. Jolley, Andrew J. Russell, Paul F. Quinn, Matthew T. Perks   +3 more
doaj   +1 more source

Experimental and computational investigation on the macroscopic circulation patterns in a bubbling gas-solid fluidized bed [PDF]

, 2009
The hydrodynamics of a freely bubbling, pseudo 2-D fluidized bed has been investigated experimentally for different bed aspect ratios at different superficial gas velocities by using Particle Image Velocimetry (PIV) combined with Digital Image Analysis ...
Bulte, M.J. ten, Kuipers, J.A.M., Laverman, J.A., Sint Annaland, M. van   +3 more
core   +2 more sources

Swelling‐Induced Stress‐Assisted Transfer of Nanodiamond Arrays With a PVA Carrier Tape for Conformal Bio‐Integrated Sensing and Labelling

Advanced Functional Materials, EarlyView.
This work introduces a swelling‐induced, stress‐assisted water‐soluble PVA tape strategy to transfer‐print nanodiamond quantum‐sensor arrays onto soft, curved biological interfaces. The room‐temperature, water‐triggered process achieves >98% fidelity and residue‐free integration, enabling conformal quantum sensing on contact lenses, neural probes, and ...
Luyao Zhang, Lingzhi Wang, Xinhao Hu, Tai Nam Yip, Mingze Sun, Jixiang Jing, Lizhi Xu, Yuan Lin, Yong Hou, Zhiqin Chu   +9 more
wiley   +1 more source

X-Ray imaging method for in-situ study of particle-laden flows

e-Journal of Nondestructive Testing
 The accurate measurement of flow parameters often depends on sensor accessibility. Optical flow assessment techniques, such as Particle Image Velocimetry (PIV) and Particle Tracking Velocimetry (PTV), are limited to optically transparent media. However,
Julian Kattinger, Phi-Long Chung, Mike Kornely, Julian Ehrler, Marc Kreutzbruck, Christian Bonten   +5 more
doaj   +1 more source

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

Advanced Materials, EarlyView.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang, Byeongseok Ryu, Sujeong Ahn, Junhyub Kim, Myeonghun Jang, Jeong Ho Cho, Won‐Gun Koh, Hyungsuk Lee   +7 more
wiley   +1 more source

A numerical and experimental analysis of flow in a centrifugal pump [PDF]

, 2002
Computational fluid dynamics (CFD) analysis has been used to solve the unsteady three-dimensional viscous flow in the entire impeller and volute casing of a centrifugal pump.
Blanco, E., Fernandez, J., Parrondo, J., Scanlon, T.J., Stickland, M.T.   +4 more
core   +1 more source