Effects of atmospheric pressure and air concentration in the fluid on the motion of a rigid sphere along a wall (experiment)

被引：0
作者：
P. V. Kozlov
A. N. Prokunin
R. V. Slavin
机构：
来源：
Fluid Dynamics | 2007年 / 42卷
关键词：
rigid sphere; wall; cavitation; atmospheric pressure; air dissolved in fluid; nonequilibrium; steady and unsteady motions;
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学科分类号：
摘要：
The effects of the dissolved air concentration and atmospheric pressure on the motion of a rigid sphere along a wall in a fluid are studied experimentally. These effects are the result of the occurrence of a gas bubble in the lubrication layer between the moving sphere’s and the wall. It is found that, depending on the air concentration in the fluid and the atmospheric pressure, during the sphere motion the bubble volume may either increase or remain constant. From the observations, it is clear that the variation of the bubble volume is associated with the unsteady motion of the sphere.
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页码：950 / 958
页数：8
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