梢隙流动空化初生及空化形态观测研究  

Observation andresearch onthe cavitation inception and cavitation structure of tip leakage flow

作　　者：刘玉文 徐良浩 张国平[1] 彭晓星[1] 

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《水动力学研究与进展（A辑）》2017年第6期671-679,共9页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金项目(11332009)~~

摘　　要：该文描述了在小型多功能高速空泡水筒中,对NACA0012和NACA0024水翼进行梢隙流动空化形态观测,并分析其影响因素和发展规律。实验中通过高速摄像捕捉梢隙空化的结构形态与运动轨迹,分析其随间隙宽度、来流水速以及水翼攻角的变化规律。同时在不同的水速、攻角以及间隙宽度下记录水翼的初生空化数,重点分析了间隙宽度对不同水翼初生空化数的影响规律,发现存在某一间隙宽度使梢涡初生空化数达到最大值。The experimental observations on cavitation configuration of the tip leakage flow were carried out in Cavitation Mechanism Tunnel of CSSRC with NACA0012 and NACA0024 hydrofoil models. In the experiment, tip leakage cavitation structure and trajectory were captured by high speed visualizations. Some factors, such as incoming velocity, attack angle of hydrofoil and the clearance between the blade tip and the wall, were studied by series tests. The inception cavitation numbers changed with the clearances were obtained. And it is found thatthere is a specific clearance where the inceptioncavitation number becomes maximum one.

关 键 词：梢隙流动 梢隙空化 梢涡 初生空化数 

分 类 号：O352[理学—流体力学]