Motion and wake structure of spherical particles

Motion and wake structure of spherical particles
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DOI:
10.1088/0951-7715/18/1/000
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发表时间:
2004-12
期刊:
影响因子:
1.7
通讯作者:
C. Veldhuis;A. Biesheuvel;L. van Wijngaarden;D. Lohse
C. Veldhuis;A. Biesheuvel;L. van Wijngaarden;D. Lohse
中科院分区:
数学2区
文献类型:
--
作者:
C. Veldhuis;A. Biesheuvel;L. van Wijngaarden;D. Lohse

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本文介绍了在重力作用下,在液体中自由上升或下降的固体球体后面的尾流结构的流动显示研究结果。这些显示出与在保持固定的球体后面观察到的尾流结构的显著差异。控制上升或下降速度的两个参数(即雷诺数)是球体和液体之间的密度比和伽利略数。
This paper presents results from a flow visualization study of the wake structures behind solid spheres rising or falling freely in liquids, under the action of gravity. These show remarkable differences to the wake structures observed behind spheres held fixed. The two parameters controlling the rise or fall velocity (i.e. the Reynolds number) are the density ratio between the sphere and liquid and the Galileo number.