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

Density fluctuations in a model for vibrated granular media.

M Nicodemi1, A Coniglio, H J Herrmann

  • 1PMMH ESPCI, 10 rue Vauquelin, 75231 Paris Cedex 05, France.

Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
|April 24, 2002
PubMed
Summary

Density fluctuations in vibrated granular media originate from microscopic grain packing disorder. Different vibration conditions reveal distinct density relaxation behaviors, accurately modeled by power laws.

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

Centrality and universality in scale-free networks.

Physical review. E·2026
Same author

Maximum entropy models of neuronal populations at and off criticality.

ArXiv·2025
Same author

A national evaluation of the implementation of guideline recommendations towards antibiotic prophylaxis prior to percutaneous endoscopic gastrostomy and jejunostomy tube placement.

Journal of physiology and pharmacology : an official journal of the Polish Physiological Society·2025
Same author

Adherence and acceptance of a new oral nutritional supplement in cancer patients - a pilot study in crossover design.

Journal of physiology and pharmacology : an official journal of the Polish Physiological Society·2024
Same author

Thermodynamic analog of integrate-and-fire neuronal networks by maximum entropy modelling.

Scientific reports·2024
Same author

Phenogenetic profile and agronomic contribution of Azospirillum argentinense Az39<sup>T</sup>, a reference strain for the South American inoculant industry.

Microbiological research·2024

Area of Science:

  • Physics
  • Materials Science
  • Complex Systems

Background:

  • Granular materials exhibit complex behaviors under external stimuli.
  • Understanding density fluctuations is key to characterizing granular media dynamics.

Purpose of the Study:

  • To investigate the microscopic origins of density fluctuations in vibrated granular media.
  • To identify and characterize different density relaxation regimes based on vibration parameters.
  • To analyze the power spectrum of density relaxation.

Main Methods:

  • Development of a computational model for vibrated granular media.
  • Systematic variation of vibration amplitude and duration.
  • Analysis of density fluctuations and their power spectrum.

Related Experiment Videos

Main Results:

  • Density fluctuations are directly linked to microscopic disorder in grain packing.
  • Multiple density relaxation regimes were observed, dependent on vibration parameters.
  • The power spectrum of density relaxation follows power-law behavior across different regimes.

Conclusions:

  • Microscopic disorder is the fundamental cause of density fluctuations in vibrated granular systems.
  • Vibration parameters critically influence the relaxation dynamics of granular media.
  • Power-law descriptions effectively capture the spectral properties of density relaxation.