A benchmark experiment on gas cavitation
A benchmark experiment on gas cavitation
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气体空化基准实验
DOI：
10.1007/s00348-014-1786-5
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发表时间：
2014
影响因子：
2.4
通讯作者：
Rene Honza
中科院分区：
文献类型：
--
作者：
F. Peters;Rene Honza
摘要
空化研究通常是在复杂机械中进行的实验。在那里，研究空化最重要的问题之一——成核是极其困难的。这项工作研究了明确的流动条件下的气体空化。核被放置在壁约束空腔中，并暴露于具有独立压力和剪切应力的径向间隙流。实现了往复式气泡的产生。评估气泡频率和尺寸，结果取决于压力和壁剪切应力。该实验有助于空化的系统研究。
Abstract
Cavitation research is often a matter of experiments conducted in complex machinery. There, it is extremely difficult to look into one of the most important issues of cavitation which is nucleation. This work investigates gas cavitation under well-defined flow conditions. Nuclei are placed in wall bound cavities and are exposed to a radial gap flow featuring independent pressure and shear stress. A reciprocating bubble generation is achieved. Bubble frequency and size are evaluated which turn out to depend on pressure and wall shear stress. The experiment lends itself to systematic research in cavitation.