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 Experiment Videos

Intermittency in two-dimensional Ekman-Navier-Stokes turbulence.

G Boffetta1, A Celani, S Musacchio

  • 1Dipartimento di Fisica Generale, Università di Torino, Via Pietro Giuria 1, 10125 Torino, Italy.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|September 21, 2002
PubMed
Summary

Small-scale vorticity fluctuations in 2D Navier-Stokes turbulence with Ekman friction exhibit intermittency. Their statistics mirror those of a passive scalar with a finite lifetime, confirming theoretical predictions.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Optimal trajectories for Bayesian olfactory search in turbulent flows: The low information limit and beyond.

Physical review fluids·2025
Same author

Orientational order and topological defects in a dilute solutions of rodlike polymers at low Reynolds number.

Physical review. E·2024
Same author

Optimal policies for Bayesian olfactory search in turbulent flows.

Physical review. E·2023
Same author

Flocking turbulence of microswimmers in confined domains.

Physical review. E·2023
Same author

Optimizing airborne wind energy with reinforcement learning.

The European physical journal. E, Soft matter·2023
Same author

Giant vortex dynamics in confined bacterial turbulence.

Physical review. E·2022

Area of Science:

  • Fluid dynamics
  • Turbulence theory
  • Statistical mechanics

Background:

  • The Navier-Stokes equations describe fluid motion.
  • Turbulence is characterized by chaotic fluid behavior.
  • Ekman friction is a force acting on fluids due to rotation.

Purpose of the Study:

  • To investigate the statistical properties of vorticity in 2D Navier-Stokes turbulence with Ekman friction.
  • To verify the intermittency conjecture for small-scale vorticity fluctuations.
  • To compare vorticity statistics with those of passive scalars.

Main Methods:

  • Numerical simulations of 2D Navier-Stokes turbulence.
  • Analysis of vorticity field statistics.
  • Comparison with passive scalar transport models.

Related Experiment Videos

Main Results:

  • Confirmed intermittency in small-scale vorticity fluctuations.
  • Demonstrated that vorticity statistics match passive scalar statistics.
  • Validated predictions by Bernard and Nam et al.

Conclusions:

  • Small-scale vorticity in 2D turbulent flows with Ekman friction is intermittent.
  • The intermittency of vorticity is linked to passive scalar behavior.
  • This study provides insights into the nature of small-scale structures in turbulent flows.