Stationary state volume fluctuations in a granular medium.
| dc.contributor.author | Schröter, Matthias | |
| dc.contributor.author | Goldman, Daniel I | |
| dc.contributor.author | Swinney, Harry L | |
| dc.date.accessioned | 2020-02-18T21:50:31Z | |
| dc.date.available | 2020-02-18T21:50:31Z | |
| dc.date.issued | 2005-03-30 | |
| dc.date.updated | 2020-02-18T21:50:30Z | |
| dc.description.abstract | A statistical description of static granular material requires ergodic sampling of the phase space spanned by the different configurations of the particles. We periodically fluidize a column of glass beads and find that the sequence of volume fractions phi of postfluidized states is history independent and Gaussian distributed about a stationary state. The standard deviation of phi exhibits, as a function of phi, a minimum corresponding to a maximum in the number of statistically independent regions. Measurements of the fluctuations enable us to determine the compactivity X , a temperaturelike state variable introduced in the statistical theory of Edwards and Oakeshott [Physica A 157, 1080 (1989)]. | |
| dc.identifier.issn | 1539-3755 | |
| dc.identifier.issn | 1550-2376 | |
| dc.identifier.uri | ||
| dc.language | eng | |
| dc.publisher | American Physical Society (APS) | |
| dc.relation.ispartof | Physical review. E, Statistical, nonlinear, and soft matter physics | |
| dc.relation.isversionof | 10.1103/physreve.71.030301 | |
| dc.subject | Science & Technology | |
| dc.subject | Physical Sciences | |
| dc.subject | Physics, Fluids & Plasmas | |
| dc.subject | Physics, Mathematical | |
| dc.subject | Physics | |
| dc.subject | STATISTICAL-MECHANICS | |
| dc.subject | FLUIDIZED-BEDS | |
| dc.subject | DYNAMICS | |
| dc.subject | POWDERS | |
| dc.subject | MODEL | |
| dc.subject | COMPACTION | |
| dc.subject | MIXTURES | |
| dc.subject | PACKING | |
| dc.subject | SPHERES | |
| dc.title | Stationary state volume fluctuations in a granular medium. | |
| dc.type | Journal article | |
| duke.contributor.orcid | Schroter, Matthias|0000-0002-8332-5585 | |
| pubs.begin-page | 030301 | |
| pubs.issue | 3 Pt 1 | |
| pubs.organisational-group | Trinity College of Arts & Sciences | |
| pubs.organisational-group | Duke | |
| pubs.publication-status | Published | |
| pubs.volume | 71 |
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