Jove
Visualize
Contact Us

Related Experiment Videos

Solid-fluid transition in a granular shear flow.

Ashish V Orpe1, D V Khakhar

  • 1Department of Chemical Engineering, Indian Institute of Technology-Bombay, Powai, Mumbai 400076.

Physical Review Letters
|August 25, 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

Theory for size segregation in flowing granular mixtures based on computation of forces on a single large particle.

Physical review. E·2021
Same author

Theoretical calculation of the buoyancy force on a particle in flowing granular mixtures.

Physical review. E·2019
Same author

Friction-mediated flow and jamming in a two-dimensional silo with two exit orifices.

Physical review. E·2019
Same author

Breakage of vesicles in a simple shear flow.

Soft matter·2019
Same author

Sidewall-friction-driven ordering transition in granular channel flows: Implications for granular rheology.

Physical review. E·2018
Same author

Passive microrheology in the effective time domain: analyzing time dependent colloidal dispersions.

Soft matter·2016
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
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

This study reveals a distinct shift in granular shear flow rheology. Apparent viscosity dramatically changes with root-mean-square (rms) velocity, indicating a transition from fluid to solid-like behavior.

Area of Science:

  • Physics
  • Materials Science
  • Fluid Dynamics

Background:

  • Granular materials exhibit complex flow behaviors distinct from continuous fluids.
  • Understanding the rheology of granular shear flow is crucial for various industrial and geological applications.

Purpose of the Study:

  • To investigate the rheological properties of granular shear flow in a quasi-2D rotating cylinder.
  • To analyze the relationship between apparent viscosity and particle velocity distribution across different flow depths.

Main Methods:

  • Utilized streakline photography and image analysis to capture particle dynamics.
  • Conducted experiments in a quasi-2D rotating cylinder under steady, non-accelerating flow conditions.
  • Varied particle sizes and rotational speeds to observe rheological changes.

Related Experiment Videos

Main Results:

  • Identified a sharp transition in apparent viscosity (eta) correlated with root-mean-square (rms) velocity (u).
  • Observed that below the transition depth, rms velocity decreases, and viscosity follows eta proportional to u(-1.5).
  • Found Maxwellian velocity distributions above the transition and Poisson distributions deep within the granular layer.

Conclusions:

  • Granular shear flow exhibits a sharp transition from fluid-like to a mixed fluid + solid-like state as rms velocity decreases.
  • The rheological behavior suggests a transition towards an amorphous solid-like state at greater depths within the flow layer.