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The experimental apparatus consists of a rectangular PMMA box locally heated from below. | The experimental apparatus consists of a rectangular PMMA box locally heated from below. | ||
The granular material (polystyrene spheres) is initially placed into the box and slowly settles down. | The granular material (polystyrene spheres) is initially placed into the box and slowly settles down. | ||
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The destabilization is evidenced by the triggering and establishment of a dense granular plume. | The destabilization is evidenced by the triggering and establishment of a dense granular plume. | ||
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Varying the granular layer height, time series of the free layer surface are extracted, to compute the underlying volume of the granular layer. | Varying the granular layer height, time series of the free layer surface are extracted, to compute the underlying volume of the granular layer. | ||
The initial interface deformation, the plume emission, the final craterization and the cave formation | The initial interface deformation, the plume emission, the final craterization and the cave formation | ||
Revision as of 15:46, 31 March 2016
An immersed granular bed can be destabilized using local thermal forcing and induced buoyant force. The experimental apparatus consists of a rectangular PMMA box locally heated from below. The granular material (polystyrene spheres) is initially placed into the box and slowly settles down.
The destabilization is evidenced by the triggering and establishment of a dense granular plume.
Varying the granular layer height, time series of the free layer surface are extracted, to compute the underlying volume of the granular layer. The initial interface deformation, the plume emission, the final craterization and the cave formation are observed, simulated using continuous media approach & analyzed.
Participants
Eric Herbert, Cyprien Morize (FAST), Aurélie Louis–Napoléon, Alban Sauret, Christophe Goupil, and Yves D’Angelo.