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Measurements of the coefficient of restitution for particle collisions with ductile surfaces in a liquid

机译:液体中易延展表面与粒子碰撞的恢复系数的测量

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摘要

This paper presents the approach and rebound of a particle colliding with a deformable surface in a viscous liquid. The complex interaction between the fluid and the solid phases is coupled through the dynamics of the flow as well as the deformation process. For the experiments, steel particles impacted ductile aluminum alloys samples immersed in an aqueous mixture of glycerol and water. The experiments involved particle Stokes number from 5 to 10~5 and deformation parameters from 10~(-2) to 10~2. From the experiments, the coefficient of restitution is shown to depend on both these parameters. The coefficient of restitution is closest to unity when the deformation parameter is less than one and the Stokes number is greater than 10~3. The coefficient of restitution decreases as the deformation parameter increases and when the Stokes number decreases.
机译:本文提出了一种粒子在粘性液体中与可变形表面碰撞的方法和回弹。流体和固相之间的复杂相互作用通过流动的动力学以及变形过程而耦合。在实验中,钢颗粒撞击了浸入甘油和水的水性混合物中的易延展铝合金样品。实验涉及的粒子斯托克斯数为5到10〜5,变形参数为10〜(-2)到10〜2。从实验中可以看出,恢复系数取决于这两个参数。当变形参数小于1且斯托克斯数大于10〜3时,恢复系数最接近于1。恢复系数随着变形参数的增加和斯托克斯数的减少而减小。

著录项

  • 来源
    《Granular matter》 |2010年第2期|p.185-191|共7页
  • 作者

    A. Ruiz-Angulo; M. L. Hunt;

  • 作者单位

    California Institute of Technology, Pasadena, CA 91125, USA;

    California Institute of Technology, Pasadena, CA 91125, 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

    slurry erosion;

    机译:泥浆侵蚀;

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