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首页> 美国政府科技报告 >Layered Granule Chute Flow Near the Angle of Repose
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Layered Granule Chute Flow Near the Angle of Repose

机译：分层颗粒滑槽流动靠近休止角

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A natural, two-layered gravity flow of sand can be obtained on chutes inclined at angles slightly above the angle of repose of the sand. The top-surface layer is free-flowing, is thin, and moves rapidly at supercritical velocity. The velocity depends mainly on the character of the sand and the chute inclination angle. The bottom layer is thick and moves more slowly, with the flow controlled by adjustable weirs at the chute exit. The velocity profile in the thick bottom layer is curved; as much as an order of magnitude higher velocity occurs in the upper portion of the layer than occurs along the bottom wall of the chute. This study has applications to the cascade inertial fusion concept. (ERA citation 10:038598)

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