Cavitation is a kind of complex hydrodynamics phenomena, which only exists in liquid. Research status on cavitation characteristics is reviewed, including bubble equation of motion, therotical analysis, cavitation experiment, as well as bubbles study. Research on bubble cluster makes cavitation study close to engineering prac-tice. The law of cavitation on bubble cluster is a study emphasis in further research..%空化是液体特有的一种复杂流体动力学现象.从空泡运动方程、理论分析、空化实验、多空泡研究等方面简要介绍了空化特性的国内外研究现状.空泡群的研究将使空化研究更接近于工程实际,空泡群空化规律的深入研究是下一步努力的方向.
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