空化现象是液体从液相变成气相的相变过程。当液体的温度不变而压力降低时,液体内形成空穴。空穴在流场中初生、发育、溃灭与再生,循环不已。这一过程称为空化。在学科性质上属于两相流范畴。这是一种瞬息变化的随机过程,其瞬态微观现象是十分复杂的。空化与空蚀的研究已有近百年的历史。首先 Cavitation phenomenon is the liquid from the liquid phase into the phase change process. When the temperature of the liquid is constant and the pressure is reduced, holes are formed in the liquid. Hole in the flow field of newborn, development, collapse and regeneration, endless loop. This process is called cavitation. In the nature of the two-phase flow in the area. This is a stochastic process of transient changes whose transient microscopic phenomena are quite complex. Cavitation and cavitation research has been nearly a hundred years of history. First of all