中文摘要：

研制了水平发射细长体诱导产生超空泡的实验设备。采用高速摄影仪实时记录几种不同工况下细长体在水中高速航行的过程，观察细长体水平高速入水后超空泡气液两相流形态发展变化过程。分析细长体的长径比和空化器头部形状对超空泡形态和稳定性的影响。根据实时记录的照片，计算细长体的速度以及超空泡尺寸的变化，并给出了空化数和超空泡无量纲尺寸之间的关系曲线，然后与Logvinovich和Savchenko等提出的模型做了比较，结果表明实验数据和模型的变化趋势基本一致。

英文摘要：

This paper develops an experimental device launching slender body horizontally and inducing the production of supercavity; records the process of high-speed sailing in water of slender body under several different working conditions in real time by using a high-speed camera; observes the morphological development and change process of supercavity gas-liquid two-phase flow after the slender body enters water horizontally at high speed; specifically analyzes the influence of length to diameter ratio of slender body and the head shape of cavitator; calculates the speed of slender body and the change of supercavity size according to pictures recorded in real time and provides the relation curve between cavitation number and supercavity dimensionless size; and then compares models put forward by Logvinovich and Savchenko etc. The result shows that experimental data and the variation trend of model are basically consistent.