Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Rapidly Varying Flow01:24

Rapidly Varying Flow

637
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
637
Uniform Depth Channel Flow01:27

Uniform Depth Channel Flow

742
Uniform depth channel flow keeps fluid depth consistent along channels such as irrigation canals. In natural channels, such as rivers, approximate uniform flow is often assumed. This condition occurs when the channel’s bottom slope matches the energy slope, balancing potential energy lost from gravity with head loss due to shear stress. This balance prevents depth changes along the channel length, resulting in a steady, uniform flow.Uniform flow in open channels with a constant cross-section...
742
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

997
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
997
Couette Flow01:22

Couette Flow

1.3K
Couette flow represents the flow of fluid between two parallel plates, with one plate fixed and the other moving with a constant velocity. This configuration allows for a simplified analysis using the Navier-Stokes equations, which govern fluid motion under conditions of viscosity and incompressibility. For Couette flow, the assumptions include a steady, laminar, incompressible flow with a zero-pressure gradient in the flow direction. This flow type is beneficial for understanding shear-driven...
1.3K
Steady Flow of a Fluid Stream01:27

Steady Flow of a Fluid Stream

856
Consider a control volume, such as a pipe with solid boundaries, through which fluid flows and changes direction due to the impulse exerted by the resulting force from the pipe walls. In steady flow, the mass of fluid entering the control volume at a given time, t, with velocity v1, is equal to the mass leaving after infinitesimal time dt, with velocity v2.
During this process, the momentum of the fluid within the control volume remains constant over the time interval dt. By applying the...
856
Turbulent Flow01:24

Turbulent Flow

877
Turbulent flow is characterized by unpredictable fluctuations in velocity and pressure, which result in a chaotic fluid movement distinct from the orderly patterns of laminar flow. While laminar flow is governed by smooth, parallel layers with minimal mixing, turbulent flow exhibits highly irregular, three-dimensional patterns. This behavior arises due to instabilities in the fluid's velocity profile, and amplifies as the flow velocity increases. Minor disturbances, known as turbulent...
877

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Enhanced detection of subtle cortical abnormalities in focal epilepsy using 7 T MRI surface-based models and graph neural networks.

Neuroradiology·2026
Same author

Global Socioeconomic Context and Brain Ageing in Epilepsy: an ENIGMA-Epilepsy study.

medRxiv : the preprint server for health sciences·2026
Same author

Clinical utility of [<sup>18</sup>F]-FET PET Imaging in pediatric brain tumors: a case series.

Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery·2026
Same author

Sex-related structural alterations across common epilepsies: a worldwide ENIGMA study.

bioRxiv : the preprint server for biology·2026
Same author

Effective correction of extreme capacitive artifacts in TMS-EEG via windowed detrending.

Journal of neural engineering·2026
Same author

Virtual Source-Based Apodization for Diverging Wave Imaging: An Experimental Study.

Ultrasonic imaging·2026

Related Experiment Video

Updated: Mar 28, 2026

Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
10:53

Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques

Published on: March 12, 2019

7.7K

Plane-wave transverse oscillation for high-frame-rate 2-D vector flow imaging.

Matteo Lenge, Alessandro Ramalli, Piero Tortoli

    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
    |December 17, 2015
    PubMed
    Summary

    This study introduces transverse oscillations (TOs) with plane waves (PWs) for high-framerate ultrasound imaging. The method enables ultrafast 2-D vector flow mapping, advancing multidimensional flow estimation in medical applications.

    More Related Videos

    Blood Flow Imaging with Ultrafast Doppler
    05:57

    Blood Flow Imaging with Ultrafast Doppler

    Published on: October 14, 2020

    8.7K
    High-speed Particle Image Velocimetry Near Surfaces
    11:59

    High-speed Particle Image Velocimetry Near Surfaces

    Published on: June 24, 2013

    34.0K

    Related Experiment Videos

    Last Updated: Mar 28, 2026

    Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
    10:53

    Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques

    Published on: March 12, 2019

    7.7K
    Blood Flow Imaging with Ultrafast Doppler
    05:57

    Blood Flow Imaging with Ultrafast Doppler

    Published on: October 14, 2020

    8.7K
    High-speed Particle Image Velocimetry Near Surfaces
    11:59

    High-speed Particle Image Velocimetry Near Surfaces

    Published on: June 24, 2013

    34.0K

    Area of Science:

    • Medical imaging
    • Ultrasound technology
    • Fluid dynamics

    Background:

    • Transverse oscillation (TO) methods can enhance ultrasound pulse-echo fields (PEF).
    • Extending flow investigations toward multidimensional estimates is a key goal in ultrasound imaging.
    • High-framerate imaging is crucial for capturing dynamic physiological processes.

    Purpose of the Study:

    • To couple transverse oscillations (TOs) with plane wave (PW) transmissions.
    • To reconstruct high-framerate radiofrequency (RF) images with bidirectional oscillations.
    • To develop and assess an ultrafast 2-D vector flow mapping technique.

    Main Methods:

    • Transmission of plane waves (PWs) coupled with transverse oscillations (TOs).
    • Reconstruction of high-framerate RF images with bidirectional oscillations.
    • Application of a 2-D phase-based displacement estimator for vector flow mapping.

    Main Results:

    • Generated lateral wavelengths showed minimal bias (-3.3 ± 5.7% in simulations, 10.6 ± 7.4% in experiments).
    • Ultrafast vector flow mapping demonstrated overall velocity biases below 20% across various parameters.
    • Successful in vivo validation on common carotid and brachial arteries.

    Conclusions:

    • The TO-PW method enables high-framerate 2-D vector flow mapping.
    • The technique shows promising accuracy and robustness for diverse flow conditions.
    • This advancement supports enhanced multidimensional ultrasound flow investigations.