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

Oscillatory patterns in a rotating aqueous suspension.

A P J Breu1, C A Kruelle, I Rehberg

  • 1Experimentalphysik V, Universität Bayreuth, 95440 Bayreuth, Germany.

The European Physical Journal. E, Soft Matter
|March 31, 2004
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

Response of a ferrofluid to traveling-stripe forcing.

Journal of physics. Condensed matter : an Institute of Physics journal·2011
Same author

Ripple formation in weakly turbulent flow.

The European physical journal. E, Soft matter·2008
Same author

A horizontal Brazil-nut effect and its reverse.

Physical review letters·2005
Same author

Long-time behavior of sand ripples induced by water shear flow.

The European physical journal. E, Soft matter·2004
Same author

Granular phase transition as a precondition for segregation.

Physical review letters·2003
Same author

Reversing the Brazil-nut effect: competition between percolation and condensation.

Physical review letters·2003

Researchers observed new oscillatory patterns in rotating granular suspensions. Traveling waves emerged in high-viscosity fluids, while low-viscosity fluids exhibited ring instabilities, revealing complex fluid dynamics.

Area of Science:

  • Physics
  • Fluid Dynamics
  • Granular Materials

Background:

  • Granular suspensions in rotating tubes display various patterns.
  • Previous studies focused on stationary homogeneous and ring-like patterns.

Purpose of the Study:

  • Investigate oscillatory states in granular suspensions.
  • Characterize traveling wave dynamics and low-viscosity oscillations.

Main Methods:

  • Agitation of granular material in glycerin-water mixtures within horizontally aligned rotating tubes.
  • Systematic variation of rotation frequency and fluid dynamic viscosity.
  • Observation and analysis of emergent dynamic patterns.

Main Results:

  • Two oscillatory states were identified: traveling waves and low-frequency oscillations.

Related Experiment Videos

  • Traveling waves occurred in high-viscosity fluids with constant velocity.
  • Low-viscosity fluids showed secondary instabilities in ring patterns.

    • Conclusions:

    • The transition to traveling waves is an imperfect supercritical bifurcation.
    • Wave characteristics depend on rotation frequency and viscosity.
    • New dynamic regimes expand understanding of granular flow physics.