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

Euler's Equations of Motion01:28

Euler's Equations of Motion

844
In fluid mechanics, shear stresses arise from viscosity, which represents a fluid's internal resistance to deformation. For low-viscosity fluids, like water, these stresses are minimal, simplifying flow analysis by allowing the fluid to be treated as inviscid, or frictionless. In an inviscid fluid, shear stresses are absent, leaving only normal stresses, which act perpendicularly to fluid elements. Notably, pressure — defined as the negative of the normal stress — remains uniform across...
844
Navier–Stokes Equations01:28

Navier–Stokes Equations

2.0K
For incompressible Newtonian fluids, where density remains constant, stresses show a linear relationship with the deformation rate, defined by normal and shear stresses. Normal stresses depend on the pressure exerted on the fluid and the rate of deformation in specific directions, which determines how fluid flows under varying pressures. Shear stresses, on the other hand, act tangentially across fluid layers. They explain how adjacent fluid layers slide relative to one another, connecting...
2.0K
Turbulent Flow01:24

Turbulent Flow

617
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...
617
Irrotational Flow01:28

Irrotational Flow

878
Irrotational flow is characterized by fluid motion where particles do not rotate around their axes, resulting in zero vorticity. For a flow to be irrotational, the curl of the velocity field must be zero. This imposes specific conditions on velocity gradients. For instance, to maintain zero rotation about the z-axis, the gradient condition:
878
Newtonian Fluid: Problem Solving01:18

Newtonian Fluid: Problem Solving

816
Newtonian fluids exhibit a constant viscosity, meaning their shear stress and shear strain rate are directly proportional. This property ensures a predictable and stable response to applied forces, maintaining a linear relationship between force and flow. Examples include water, air, and light oils, consistently demonstrating this proportional behavior regardless of external conditions.
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
816
Couette Flow01:22

Couette Flow

842
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...
842

You might also read

Related Articles

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

Sort by
Same author

Weakened energy cascade in elastoinertial turbulence.

Physical review. E·2021
Same author

Modeling the Microstructure and Stress in Dense Suspensions under Inhomogeneous Flow.

Physical review letters·2020
Same author

Constitutive Model for Time-Dependent Flows of Shear-Thickening Suspensions.

Physical review letters·2019
Same author

Stabilizing the thermal lattice Boltzmann method by spatial filtering.

Physical review. E·2016
Same author

Boundary conditions for surface reactions in lattice Boltzmann simulations.

Physical review. E, Statistical, nonlinear, and soft matter physics·2014
Same author

Lattice-Boltzmann-based two-phase thermal model for simulating phase change.

Physical review. E, Statistical, nonlinear, and soft matter physics·2013
Same journal

Erratum: Spectroscopy and Ground-State Transfer of Ultracold Bosonic ^{39}K^{133}Cs Molecules [Phys. Rev. Lett. 135, 203401 (2025)].

Physical review letters·2026
Same journal

Erratum: Lifetime of the ^{2}F_{7/2} Level in Yb^{+} for Spontaneous Emission of Electric Octupole Radiation [Phys. Rev. Lett. 127, 213001 (2021)].

Physical review letters·2026
Same journal

Laser-Plasma Based Seeded Free Electron Laser in the High-Gain Regime.

Physical review letters·2026
Same journal

Parent Hamiltonians for Stabilizer Quantum Many-Body Scars.

Physical review letters·2026
Same journal

Properties of Heavy Cosmic Nuclei Phosphorus, Chlorine, Argon, Potassium, and Calcium: Results from the Alpha Magnetic Spectrometer.

Physical review letters·2026
Same journal

Role of Spin-Isospin Symmetries in Nuclear β-Decays.

Physical review letters·2026
See all related articles

Related Experiment Video

Updated: Jan 4, 2026

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section
11:00

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

11.9K

Two-Dimensional Decaying Elastoinertial Turbulence.

J J J Gillissen1

  • 1Department of Mathematics, University College London, Gower Street, London, WC1E 6BT, United Kingdom.

Physical Review Letters
|November 9, 2019
PubMed
Summary
This summary is machine-generated.

We numerically simulated elastoinertial turbulence, finding two distinct regimes. Higher polymer concentrations create shock waves that reduce drag, slowing energy decay.

More Related Videos

Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

10.0K
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

12.9K

Related Experiment Videos

Last Updated: Jan 4, 2026

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section
11:00

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

11.9K
Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

10.0K
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

12.9K

Area of Science:

  • Fluid Dynamics
  • Polymer Physics
  • Turbulence

Background:

  • Elastoinertial turbulence is a complex flow phenomenon driven by elastic and inertial forces.
  • Understanding the impact of polymer concentration on turbulent structures is crucial for applications.
  • Previous studies have explored various aspects of viscoelastic turbulence, but the transition between regimes remains key.

Purpose of the Study:

  • To numerically investigate the effects of varying polymer concentration on two-dimensional decaying elastoinertial turbulence.
  • To identify and characterize distinct turbulent regimes based on polymer concentration.
  • To analyze the role of elastoinertial shock waves and their impact on drag reduction.

Main Methods:

  • Numerical simulations of two-dimensional decaying turbulence.
  • Utilized the finitely extensible, nonlinear, elastic (FENE) spring model.
  • Systematically varied polymer concentration across seven orders of magnitude.

Main Results:

  • Observed two distinct turbulent elastoinertial regimes: weakly coupled and strongly coupled.
  • In the weakly coupled regime, only small-scale structures were affected by polymer concentration.
  • The strongly coupled regime exhibited changes in all scales, dominated by elastoinertial shock waves, leading to drag reduction as polymer concentration increased.

Conclusions:

  • Polymer concentration significantly influences the dynamics of elastoinertial turbulence, defining distinct flow regimes.
  • Elastoinertial shock waves emerge in the strongly coupled regime, offering significant drag reduction properties.
  • The findings provide insights into viscoelastic turbulence control and energy dissipation mechanisms.