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

Segregation-driven organization in chaotic granular flows.

K M Hill1, D V Khakhar, J F Gilchrist

  • 1R. R. McCormick School of Engineering and Applied Science, Northwestern University, Evanston, IL 60208, USA.

Proceedings of the National Academy of Sciences of the United States of America
|October 16, 1999
PubMed
Summary

Granular mixtures segregate due to flow, creating complex patterns. This research explores the competition between chaotic movement and ordered segregation in these materials.

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

Bad Teeth vs. Good Health.

The Dental register·2021
Same author

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

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

Convection-Enhanced Transport into Open Cavities : Effect of Cavity Aspect Ratio.

Cardiovascular engineering and technology·2015

Area of Science:

  • Physics
  • Materials Science
  • Chemical Engineering

Background:

  • Granular materials exhibit flow-induced segregation due to variations in particle size or density.
  • Noncohesive granular mixtures can display chaotic advection, similar to fluid dynamics.
  • The interplay between chaos and segregation in granular systems leads to diverse experimental results.

Purpose of the Study:

  • To investigate the phenomenon of de-mixing or segregation in granular mixtures.
  • To understand the competition between chaotic advection and segregation.
  • To model and analyze the formation of segregated structures in disordered granular systems.

Main Methods:

  • Experimental observation of segregated structures in granular mixtures.
  • Development of a continuum flow model.

Related Experiment Videos

  • Incorporation of collisional diffusion and density-driven segregation into the model.

    • Main Results:

    • Experimentally observed segregated structures exhibit organization within disorder.
    • The continuum flow model captures these structures.
    • Under specific conditions, structures do not reach a steady state, indicating ongoing competition.

    Conclusions:

    • The study presents a system where chaos and order compete, potentially offering the simplest experimental example.
    • Understanding granular segregation is crucial for industrial applications.
    • The developed model provides insights into the complex dynamics of granular flow and pattern formation.