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

Multiscale clustering in granular surface flows.

D Bonamy1, F Daviaud, L Laurent

  • 1Service de Physique de l'Etat Condensé, CEA/DSM Saclay, 91191 Gif sur Yvette, France.

Physical Review Letters
|July 30, 2002
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

Second Data Release from the European Pulsar Timing Array: Challenging the Ultralight Dark Matter Paradigm.

Physical review letters·2023
Same author

Scale dependence of fractal dimension in deterministic and stochastic Lorenz-63 systems.

Chaos (Woodbury, N.Y.)·2023
Same author

Safety, pitfalls, and misunderstandings about the use of ozone therapy as a regenerative medicine tool. A narrative review.

Journal of biological regulators and homeostatic agents·2020
Same author

Non-discogenic low back pain treated with oxygen-ozone: outcome in selected applications.

Journal of biological regulators and homeostatic agents·2020
Same author

Psycho-social characteristics in patients with discopathy: Quality of Life, coping strategy and mood state.

Journal of biological regulators and homeostatic agents·2020
Same author

[Non-invasive home ventilation in patients with severe hypercapnic chronic obstructive pulmonary disease: The SOMNOVENT' study].

Revue des maladies respiratoires·2020
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Rigid, fractal clusters of grains exist in granular flows within rotating drums. Their power-law size distribution challenges existing theoretical models for dense granular flow dynamics.

Area of Science:

  • Physics
  • Materials Science
  • Fluid Dynamics

Background:

  • Dense granular flows are common in nature and industry.
  • Understanding their complex dynamics, including flow patterns and particle interactions, is crucial.
  • Existing models often assume continuous media, potentially overlooking granular-specific structures.

Purpose of the Study:

  • To investigate the structure of steady granular surface flows in a rotating drum.
  • To identify and characterize any emergent structures within the flow.
  • To assess the implications of observed structures on theoretical models of granular flows.

Main Methods:

  • Experimental setup using a rotating drum to simulate granular surface flows.
  • Observation and analysis of the flowing granular layer.

Related Experiment Videos

  • Statistical analysis of cluster size distribution.

    • Main Results:

    • Demonstrated the existence of rigid clusters of grains within the flowing layer.
    • Observed that these clusters exhibit fractal characteristics.
    • Found that cluster size follows a power-law distribution, ranging from grain scale to flow thickness.

    Conclusions:

    • The absence of a characteristic length scale due to fractal clusters impacts theoretical models of dense granular flows.
    • A potential explanation for differences in velocity profiles between surface flows and inclined plane flows is proposed.