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Density-wave fronts on the brink of wet granular condensation.

ABSTRACT: Density-wave fronts in a vibrofluidized wet granular layer undergoing a gas-liquid-like transition are investigated experimentally. The threshold of the instability is governed by the amplitude of the vertical vibrations. Fronts, which are curved into a spiral shape, propagate coherently along the circular rim of the container with leading edges. They are stable beyond a critical distance from the container center. Based on an analysis of the emerging time and length scales, we propose a model for the pattern formation by considering the competition between the time scale for the condensation of wet granular particles from a gas-like state and that of the energy injection resisting this process.

SUBMITTER: Zippelius A

PROVIDER: S-EPMC5472573 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature

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Density-wave fronts on the brink of wet granular condensation.

Zippelius Andreas A Huang Kai K

Scientific reports 20170615 1

Density-wave fronts in a vibrofluidized wet granular layer undergoing a gas-liquid-like transition are investigated experimentally. The threshold of the instability is governed by the amplitude of the vertical vibrations. Fronts, which are curved into a spiral shape, propagate coherently along the circular rim of the container with leading edges. They are stable beyond a critical distance from the container center. Based on an analysis of the emerging time and length scales, we propose a model f ...[more]

PMID: 28620191

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