Funnel Flow in Hoppers
Funnel Flow in Hoppers
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DOI：
10.1115/1.3153782
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发表时间：
1980-12
期刊：
影响因子：
--
通讯作者：
T. Nguyen;C. Brennen;R. H. Sabersky
中科院分区：
文献类型：
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作者：
T. Nguyen;C. Brennen;R. H. Sabersky
详细观察了不同几何形状的楔形料斗中干燥颗粒材料的漏斗流动。研究了料斗/立式料仓结构中物料高度、立式料仓宽度、料斗角度和料斗开口宽度变化时流态的变化，并确定了许多特定流态（质量流和漏斗流的几种形式）。本文的第一部分特别关注从一种流态过渡到另一种流态的条件；特别是，它表明漏斗的存在不仅取决于料斗角度，而且还很大程度上取决于料斗/料仓系统的几何形状。在本文的第二部分中，详细探讨了出口附近漏斗形状的变化。
Detailed observations of funnel flows of dry granular materials in wedge-shaped hoppers of different geometries are presented. The variations of the flow regime with changes in the height of material in the hopper/vertical bin configuration, the width of the vertical bin, the hopper angle and the hopper opening width were investigated and a number of specific flow regimes identified (mass flow and several forms of funnel flow). In the first part of the paper particular attention is paid to the conditions for transition from one flow regime to another; in particular it is shown that the existence of a funnel depends not only on the hopper angle but is also strongly dependent on the geometry of the hopper/bin system. In the second part of the paper the variations in the shape of the funnel near the exit opening are explored in detail.