Dynamics of crater formations in immersed granular materials

Germán Varas, Valérie Vidal, Jean Christophe Géminard

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22 Scopus citations


We report the formation of a crater at the free surface of an immersed granular bed, locally crossed by an ascending gas flow. In two dimensions, the crater consists of two piles which develop around the location of the gas emission. We observe that the typical size of the crater increases logarithmically with time, independently of the gas emission dynamics. We describe the related granular flows and give an account of the influence of the experimental parameters, especially of the grain size and of the gas flow.

Original languageEnglish
Article number021301
JournalPhysical Review E
Issue number2
StatePublished - 2 Feb 2009
Externally publishedYes


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