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Article Dans Une Revue EPJ Web of Conferences Année : 2021

Effect of dissipation in rapid-gravitational granular flows

Yajuan Zhu
Renaud Delannay
Alexandre Valance

Résumé

We investigate numerically high speed granular flows down an incline and focus our attention on the influence of the restitution coefficient e of binary collisions on the nature of the flow regimes. We show in particular that e plays a major role in rapid flows. Decreasing e leads in general to denser flows but also quicker flows. The increase of the mean flow velocity with decreasing e is explained as the result of the clustering instability which produces a dense and cold core moving very fast as a plug.
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hal-03451006 , version 1 (26-11-2021)

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Yajuan Zhu, Renaud Delannay, Alexandre Valance. Effect of dissipation in rapid-gravitational granular flows. EPJ Web of Conferences, 2021, 249, pp.03046. ⟨10.1051/epjconf/202124903046⟩. ⟨hal-03451006⟩
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