Interior dynamics of subharmonious surface wave in an idealized bidimensional granular layer
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Updated: Aug 7, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Peng Zhang1, Kai Huang, Guoqing Miao
1State key lab of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093, PR China.
Abstract:
In this paper, high-speed photography was used to investigate the intrinsic dynamics of subharmonious surface wave in a vertical vibrated and idealized bidimensional granular layer. Using the high-speed photography, velocity fields of the granular layer at different stages through two cycles were obtained, which show the continuous particle motions during a cycle. From the velocity fields, a crystal structure in the wave-hollow was observed, which is reported for the first time. Furthermore, quantitative results of kinetic energy distribution in the layer were calculated, which shows temporal correspondence with the evolution of the wave pattern.
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