Advertisement

Topics

Bubbly flow velocity measurement in multiple scattering regime.

08:00 EDT 15th March 2019 | BioPortfolio

Summary of "Bubbly flow velocity measurement in multiple scattering regime."

We propose a technique to measure the velocity of a bubble cloud based on the coda correlation. The method is founded on successive recordings of multiple scattered waves from a bubble cloud. Our model predicts the dependence between the correlation coefficient of these coda waves and the velocity of the bubble cloud under diffusion approximation. The Acoustic experiments are validated by simultaneous optical measurements in a water tank, with a good agreement between the acoustical and the optical methods (relative difference smaller than 7%). This technique can be transposed to any particle flow velocity problems involving multiple scattering effects in acoustics.

Affiliation

Journal Details

This article was published in the following journal.

Name: Ultrasonics
ISSN: 1874-9968
Pages: 63-69

Links

DeepDyve research library

PubMed Articles [13683 Associated PubMed Articles listed on BioPortfolio]

Vector flow imaging of a highly-laden suspension in a zinc-air flow battery model.

Flow batteries using suspension electrodes, e.g. zincair flow batteries (ZAB), have recently gained renewed interest as potential candidates for grid energy storage or mobile applications. The perform...

A novel phase function describing light scattering of layers containing colloidal nanospheres.

Light scattering from small particles exhibit unique angular scattering distributions, which are strongly dependent on the radius to wavelength ratio as well as the refractive index contrast between t...

Robustness of heat transfer in confined inclined convection at high Prandtl number.

We investigate the dependency of the magnitude of heat transfer in a convection cell as a function of its inclination by means of experiments and simulations. The study is performed with a working flu...

In Vitro Validation of 4D Flow MRI for Local Pulse Wave Velocity Estimation.

Arterial stiffness has predictive value for cardiovascular disease (CVD). Local artery stiffness can provide insight on CVD pathology and may be useful for diagnosis and prognosis. However, current me...

Landau Velocity for Collective Quantum Hall Breakdown in Bilayer Graphene.

Breakdown of the quantum Hall effect (QHE) is commonly associated with an electric field approaching the inter-Landau-level (LL) Zener field, the ratio of the Landau gap and the cyclotron radius. Elud...

Clinical Trials [8258 Associated Clinical Trials listed on BioPortfolio]

Assessment of Flow With the New Four-dimensional Velocity-encoded Magnetic Resonance Imaging Technique

The purpose of our study is to validate the accuracy of 4D PC flow method in quantification of thoracic and upper abdominal blood flow volumes in children. In this validation study, 4D PC ...

Intermittent Negative Pressure to Improve Blood Flow in Patients With Peripheral Artery Disease: Optimal Pulse Pressure Regime

Recent studies have shown that applying intermittent negative pressure (INP) with short negative pressure (-40 mmHg) pulses to the lower extremities increase arterial blood flow velocity a...

Fetal Doppler Indices in Predicting Perinatal Outcome Among Severely Hypertensive Pregnant Patients.

60 pregnant women with singleton living fetus between 34 -38 wks gestation known to have severe hypertension in the current pregnancy were included. All participants underwent Doppler ult...

Sit Less or Exercise More: Impact on Cardiometabolic Health in MS

This study evaluates the impact of reducing sitting time and increasing exercise time on cardiometabolic health in persons with Multiple Sclerosis.

Tissue Perfusion and Blood Flow Monitoring Technology

The purpose of this study is to investigate the safety and efficacy of an optical device designed and developed to quantitatively monitor blood flow velocity of wound sites. The hypothesi...

Medical and Biotech [MESH] Definitions

A non-invasive technique using ultrasound for the measurement of cerebrovascular hemodynamics, particularly cerebral blood flow velocity and cerebral collateral flow. With a high-intensity, low-frequency pulse probe, the intracranial arteries may be studied transtemporally, transorbitally, or from below the foramen magnum.

Measurement of the index of refraction (the ratio of the velocity of light or other radiation in the first of two media to its velocity in the second as it passes from one into the other).

A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.

Measurement of intracardiac blood flow using an M-mode and/or two-dimensional (2-D) echocardiogram while simultaneously recording the spectrum of the audible Doppler signal (e.g., velocity, direction, amplitude, intensity, timing) reflected from the moving column of red blood cells.

Ultrasonography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topic

Collaborations in biotechnology
Commercial and academic collaborations are used throughout the biotechnology and pharmaceutical sector to enhance research and product development. Collaborations can take the form of research and evaluation agreements, licensing, partnerships etc. ...


Searches Linking to this Article