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

Experimental study of the multipolar vortex instability

Eloy1, Le Gal P, Le Dizes S

  • 1Institut de Recherche sur les Phenomenes Hors Equilibre, CNRS UMR 6594, Marseille, France.

Physical Review Letters
|October 13, 2000
PubMed
Summary
This summary is machine-generated.

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

Visualization of the space-time impulse response of the subcritical wake of a cylinder

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2000
Same author

Stability analysis of plane wave solutions of the discrete ginzburg-landau equation

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2000
Same author

[Maxillary actinomycosis and maxillary candidiasis in the immunocompetent patient].

Revue de laryngologie - otologie - rhinologie·1998
Same author

Coupled Wakes of Cylinders.

Physical review letters·1996
Same author

Coupled wakes behind two circular cylinders.

Physical review. A, Atomic, molecular, and optical physics·1990
Same author

Turbulence in a cylindrical container of argon near threshold of convection.

Physical review letters·1985

Researchers experimentally studied vortex instability under dipolar and tripolar constraints using a rotating cylinder. They observed various instability modes and compared them to theoretical predictions, noting secondary instabilities and cyclic breakup.

Area of Science:

  • Fluid dynamics
  • Experimental physics

Background:

  • Vortex dynamics are crucial in many scientific and engineering fields.
  • Understanding vortex instability under external constraints is essential for predicting fluid behavior.

Purpose of the Study:

  • To experimentally investigate the instability of a vortex subjected to stationary dipolar or tripolar constraints.
  • To analyze the influence of Reynolds number and aspect ratio on vortex instability modes.

Main Methods:

  • Utilizing a rotating deformable cylinder with applied rollers to create controlled constraints.
  • Systematically varying the Reynolds number and aspect ratio of the cylinder.
  • Observing and analyzing different modes of instability, including wavelength and frequency.

Related Experiment Videos

Main Results:

  • Identified distinct modes of vortex instability under dipolar and tripolar constraints.
  • Observed secondary instability and cyclic breakup phenomena.
  • Compared experimental observations with theoretical predictions for wavelength and frequency.

Conclusions:

  • The study provides experimental validation for theoretical models of vortex instability.
  • The findings contribute to a deeper understanding of vortex behavior in constrained, elliptic geometries.
  • Highlights the occurrence of complex instability phenomena like secondary instability and cyclic breakup.