Comparison of wall shear stress estimates obtained by laser Doppler velocimetry, magnetic resonance imaging and numerical simulations
Sign Up to like & getrecommendations! Published in 2019 at "Experiments in Fluids"
DOI: 10.1007/s00348-019-2758-6
Abstract: The wall shear stress (WSS) acting on human vessel walls may play an important role in the emergence of cardiovascular diseases such as aneurysms or arteriosclerosis and is of great interest in the medical context.… read more here.
Keywords: wall shear; velocimetry; magnetic resonance; shear stress ... See more keywords
Improving depth uncertainty in plenoptic camera-based velocimetry
Sign Up to like & getrecommendations! Published in 2024 at "Experiments in Fluids"
DOI: 10.1007/s00348-024-03780-6
Abstract: This work describes the development of a particle tracking velocimetry (PTV) algorithm designed to improve three-dimensional (3D), three-component velocity field measurements using a single plenoptic camera. Particular focus is on mitigating the longstanding depth uncertainty… read more here.
Keywords: depth uncertainty; velocimetry; plenoptic camera; particle ... See more keywords
KF-PEV: a causal Kalman filter-based particle event velocimetry
Sign Up to like & getrecommendations! Published in 2024 at "Experiments in Fluids"
DOI: 10.1007/s00348-024-03877-y
Abstract: Event-based pixel sensors asynchronously report changes in log-intensity in microsecond-order resolution. Its exceptional speed, cost effectiveness, and sparse event stream make it an attractive imaging modality for particle tracking velocimetry. In this work, we propose… read more here.
Keywords: pev; based particle; velocimetry; kalman filter ... See more keywords
Simple and convenient microfluidic flow rate measurement based on microbubble image velocimetry
Sign Up to like & getrecommendations! Published in 2019 at "Microfluidics and Nanofluidics"
DOI: 10.1007/s10404-019-2285-z
Abstract: Accuracy and precision velocimetry plays an important role at microfluidic device application, particularly in biomedicine and chemical synthesis. However, most of the developed methods are limited by complicated structure design and microparticle injection. Herein, utilizing… read more here.
Keywords: flow rate; microbubble image; velocimetry; simple convenient ... See more keywords
A method to determine the measurement volume for particle shadow tracking velocimetry (PSTV)
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Visualization"
DOI: 10.1007/s12650-020-00657-8
Abstract: Abstract A method to determine the depth of detection (DOD) for particle shadow tracking velocimetry (PSTV) is presented. In contrast with other image-based velocimetry techniques, PSTV is capable of measuring particle velocity in a volume of… read more here.
Keywords: volume; velocimetry; method determine; particle shadow ... See more keywords
A colour-sequence enhanced particle streak velocimetry method for air flow measurement in a ventilated space
Sign Up to like & getrecommendations! Published in 2017 at "Building and Environment"
DOI: 10.1016/j.buildenv.2016.11.015
Abstract: Abstract Airflow measurement is crucially important for studying the indoor environment. Two primary approaches that use bubbles as seeds to visualize and track the air flow are Particle Tracking Velocimetry (PTV) and Particle Streak Velocimetry… read more here.
Keywords: velocimetry; air flow; particle streak; particle ... See more keywords
Critical analysis of velocimetry methods for particulate flows from synthetic data
Sign Up to like & getrecommendations! Published in 2021 at "Chemical Engineering Journal"
DOI: 10.1016/j.cej.2021.129032
Abstract: Abstract Particle tracking methods extract high-fidelity particle-scale velocity data from digital video measurements of particle laden flow. This experimental technique is often used to better understand the motion of particles and fluids in chemical processes… read more here.
Keywords: particulate; critical analysis; velocimetry; particle tracking ... See more keywords
Adapted MR velocimetry of slow liquid flow in porous media.
Sign Up to like & getrecommendations! Published in 2017 at "Journal of magnetic resonance"
DOI: 10.1016/j.jmr.2017.01.017
Abstract: MR velocimetry of liquid flow in opaque porous filters may play an important role in better understanding the mechanisms of deep bed filtration. With this knowledge, the efficiency of separating the suspended solid particles from… read more here.
Keywords: velocimetry; liquid flow; phase contrast; flow ... See more keywords
Fetal renal blood flow velocimetry and cerebro-placental ratio in patients with isolated oligohydramnios.
Sign Up to like & getrecommendations! Published in 2019 at "Journal of gynecology obstetrics and human reproduction"
DOI: 10.1016/j.jogoh.2019.06.002
Abstract: OBJECTIVE It's proposed that oligohydramnios is caused by decreased renal perfusion due to redistribution of fetal blood at fetal growth restriction. Isolated oligohydramnios refers to the presence of oligohydramnios without fetal structural and chromosomal abnormalities,… read more here.
Keywords: renal artery; artery; velocimetry; blood ... See more keywords
Learning rheological parameters of non-Newtonian fluids from velocimetry data
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2025.92
Abstract: Abstract We solve a Bayesian inverse Navier–Stokes (N–S) problem that assimilates velocimetry data by jointly reconstructing a flow field and learning its unknown N–S parameters. We devise an algorithm that learns the most likely parameters… read more here.
Keywords: newtonian fluids; velocimetry; non newtonian; model ... See more keywords
Capillary flow homogenization during functional activation revealed by optical coherence tomography angiography based capillary velocimetry
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-22513-4
Abstract: Elaborate modeling study suggests an important role of capillary transit time heterogeneity (CTTH) reduction in brain oxygenation during functional hyperemia. Here, we use optical coherence tomography angiography (OCTA) capillary velocimetry to probe blood flow dynamics… read more here.
Keywords: optical coherence; functional activation; velocimetry; capillary flow ... See more keywords