Fundamentals of Cavitation
Fundamentals of Cavitation
复制标题
DOI：
10.1007/978-94-017-7255-6_1
复制
发表时间：
2015
期刊：
影响因子：
3.9
通讯作者：
Shanshan Xu;Y. Qiao;Xiaodong Liu;C. Church;M. Wan
中科院分区：
文献类型：
--
作者：
Shanshan Xu;Y. Qiao;Xiaodong Liu;C. Church;M. Wan
空化被定义为在液体中形成一个或多个空腔。在一般意义上，“形成”一词可以指新腔的产生和预先存在的气穴膨胀到宏观效应，例如，其形状和大小、声发射、声致发光和侵蚀特性可以被观察到。空腔的气体含量是指液体的蒸气、溶解在液体中的气体或其组合。当压力充分降低到低于液体的蒸气压或当温度升高到沸点以上时，通常会出现气穴现象。此外，还存在化学、电和辐射引起的空化。这本书只考虑了第一种情况下的空腔形成与压力下降或温度上升，在响应声场。
Cavitation is defined as the formation of one or more cavities in a liquid. The word “formation” can refer, in a general sense, to both the creation of a new cavity and the expansion of a preexisting gas pocket to a size where macroscopic effects, e.g., its shape and size, acoustic emissions, sonoluminescence, and erosive properties, can be observed. The cavity’s gas content refers to the liquid’s vapor, gas dissolved in the liquid, or combinations thereof. Cavitation usually occurs as a response when the pressure has been reduced sufficiently below the vapor pressure of the liquid or when the temperature has been elevated above the boiling point. In addition, chemical-, electrical-, and radiation-induced cavitation also exists. This book only considers the first case of cavity formation—that associated with a drop in pressure or a rise in temperature—in response to an acoustic field.