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Granular discharge and clogging for tilted hoppers

机译:倾斜料斗的颗粒排放和堵塞

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摘要

We measure the flux of spherical glass beads through a hole as a systematic function of both tilt angle and hole diameter, for two different size beads. The discharge increases with hole diameter in accord with the Beverloo relation for both horizontal and vertical holes, but in the latter case with a larger small-hole cutoff. For large holes the flux decreases linearly in cosine of the tilt angle, vanishing smoothly somewhat below the angle of repose. For small holes it vanishes abruptly at a smaller angle. The conditions for zero flux are discussed in the context of a clogging phase diagram of flow state vs tilt angle and ratio of hole to grain size.
机译:对于两种不同尺寸的珠子,我们测量球形玻璃珠通过孔的通量,这是倾斜角和孔径的系统函数。对于水平和垂直孔,放电都随孔直径的增加而增加,这符合贝弗洛关系,但在后者情况下,小孔截止值更大。对于大孔,通量沿倾斜角的余弦线性减小,在休止角以下略微消失。对于小孔,它会以较小的角度突然消失。在流动状态与倾斜角以及孔与晶粒尺寸之比的堵塞相图的背景下讨论了零通量的条件。

著录项

  • 来源
    《Granular matter》 |2010年第6期|p.579-585|共7页
  • 作者单位

    Department of Physics and Astronomy, University of Pennsylvania,209 South 33rd Street, Philadelphia, PA 19104-6396, USA;

    rnDepartment of Physics and Astronomy, University of Pennsylvania,209 South 33rd Street, Philadelphia, PA 19104-6396, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    hopper flow; beverloo relation; arching; clogging; jamming;

    机译:料斗流量贝弗鲁关系拱形堵塞干扰;

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