超空化现象由于可被应用于水下运动物体的减阻而重新引起了人们的关注.为了了解超空化流动区域的流动特性,观察了超空化流动区域的流动结构;采用LDV的方法测量了超空化发生时绕水翼的速度分布大小.结果表明,当空化发展到超空化阶段,在流动区域内形成明显的空化和水流两个流动区域.在超空化流动区域内,充满了空泡和水的混合物.靠近界面的区域内,混合液流的流速和主流区域的流速大小基本相同,而在邻近翼型表面的区域内,具有较大的速度梯度.
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