Toward the Analysis of the Structure of Granular Materials

  • O. I. Gerasymov Odessa State Environmental University
  • A. G. Zagorodny Bogolyubov Institute for Theoretical Physics, Nat. Acad. of Sci. of Ukraine
  • M. M. Somov Odessa State Environmental University
Keywords: granular systems, local structure, structural transformations, order parameter, phase diagrams, anistropic phase, configurational entropy

Abstract

The structural ordering, which is observed in granular materials and some other soft-matter objects (e.g., dusty plasma) on the meso- and macroscales, has been studied using geometrical methods (Voronoi diagrams) and by analyzing the structural order parameters. The phase diagrams for the translational and orientational order parameters testify to the native anisotropic character of granular materials. The model of lattice gas entropy has been used to describe
the vertical density distribution in granular materials in a gravitational field. The obtained theoretical results agree well with experimental data and reproduce them in the nearest vicinity of the states with maximum packing.

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Published
2018-10-05
How to Cite
Gerasymov, O., Zagorodny, A., & Somov, M. (2018). Toward the Analysis of the Structure of Granular Materials. Ukrainian Journal of Physics, 58(1), 32. https://doi.org/10.15407/ujpe58.01.0032
Section
Soft matter