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

Laminar and Turbulent Flow01:07

Laminar and Turbulent Flow

12.2K
Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the...
12.2K
Eulerian and Lagrangian Flow Descriptions01:22

Eulerian and Lagrangian Flow Descriptions

2.2K
Fluid flow analysis is critical in many scientific and engineering disciplines, and two principal approaches are used to describe this flow: the Eulerian and Lagrangian methods. These methods offer different perspectives on monitoring and analyzing the motion of fluids, each with distinct advantages depending on the scenario.
The Eulerian method focuses on fixed points in space where fluid properties, such as velocity, pressure, and temperature, are observed as the fluid moves between these...
2.2K
Introduction to Types of Flows01:23

Introduction to Types of Flows

2.2K
Fluid flows are categorized by dimensionality and behavior, with one-dimensional flow being the simplest form, where properties like velocity and pressure change only along a single axis. Water moving through straight pipes exemplifies this flow type, as variations in other directions are minimal. One-dimensional analysis helps simplify understanding such flows, focusing solely on changes along the pipe's length.
Two-dimensional flow involves changes in both length and height, as seen in...
2.2K
Plane Potential Flows01:23

Plane Potential Flows

1.2K
Plane potential flows simplify fluid motion by assuming the fluid to be irrotational and incompressible. These characteristics allow these flows to be described by a velocity potential function, ϕ, representing the flow speed in a given direction, and a stream function, ψ, that visualizes the flow path, both governed by Laplace's equation. These parameters help in estimating flow patterns, velocity distributions, and pressure fields around various hydraulic structures.
Uniform...
1.2K
Typical Model Studies01:30

Typical Model Studies

793
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
793
Turbulent Flow01:24

Turbulent Flow

970
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...
970

You might also read

Related Articles

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

Sort by
Same author

Data-driven modeling of multiscale phenomena with applications to fluid turbulence.

Physical review. E·2026
Same author

Lumped parameter modeling of changes in liver hemodynamics due to cirrhosis.

Biomechanics and modeling in mechanobiology·2026
Same author

Boundary homogenization and numerical modeling of solute transport across the blood-brain barrier.

Physical review. E·2025
Same author

Boundary Homogenization and Numerical Modeling of Solute Transport Across the Blood-Brain Barrier.

bioRxiv : the preprint server for biology·2025
Same author

Computing chaotic time-averages from few periodic or non-periodic orbits.

Chaos (Woodbury, N.Y.)·2025
Same author

Numerical Simulations Reveal Complementary Function of Blood-Brain Barrier and Glymphatic Transport in the Brain.

Physical review letters·2025

Related Experiment Video

Updated: Apr 20, 2026

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
13:02

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow

Published on: February 27, 2016

13.2K

Forecasting Fluid Flows Using the Geometry of Turbulence.

Balachandra Suri1, Jeffrey Tithof1, Roman O Grigoriev1

  • 1School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA.

Physical Review Letters
|April 4, 2017
PubMed
Summary

Researchers found unstable solutions, known as exact coherent structures, play a key role in the weak turbulence of fluid dynamics. These structures help predict turbulent flow evolution in experiments and simulations.

More Related Videos

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
09:17

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

Published on: April 23, 2018

11.4K
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

Related Experiment Videos

Last Updated: Apr 20, 2026

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
13:02

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow

Published on: February 27, 2016

13.2K
Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
09:17

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

Published on: April 23, 2018

11.4K
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

Area of Science:

  • Fluid dynamics
  • Turbulence research
  • Nonlinear dynamics

Background:

  • The Navier-Stokes equation governs fluid motion, but its complex solutions, especially in turbulent regimes, remain challenging to fully understand.
  • Exact coherent structures are specific solutions that represent equilibria or traveling waves within the fluid dynamics, often existing in unstable states.

Purpose of the Study:

  • To investigate the existence and dynamical significance of unstable solutions (exact coherent structures) in weakly turbulent fluid layers.
  • To connect theoretical structures with experimental observations in fluid dynamics.

Main Methods:

  • Laboratory experiments involving thin, electromagnetically driven fluid layers to study weak turbulence.
  • High-fidelity numerical simulations to compute exact coherent structures.
  • Analysis of experimental flow measurements and simulation data.

Main Results:

  • Identified clear experimental signatures of numerous unstable equilibrium solutions within the turbulent flow.
  • Demonstrated the dynamical importance of these structures, showing turbulent flows repeatedly visit their state-space neighborhoods.
  • Showed that the unstable manifold of an equilibrium solution can predict turbulent flow evolution over significant time scales.

Conclusions:

  • Unstable exact coherent structures are dynamically relevant in weakly turbulent fluid systems.
  • These structures provide a framework for understanding and potentially predicting turbulent behavior.
  • The study bridges experimental fluid dynamics with theoretical concepts of exact coherent structures.