Dynamic Characteristics of Supercavitating Flow Around a Hydrofoil  

作　　者：王国玉 张美红 刘淑艳 Ikohagi Toshiaki 

机构地区：[1]School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing100081, China [2]Institute of Fluid Science, Tohoku University, Sendai 980-8577, Japan

出　　处：《Journal of Beijing Institute of Technology》2004年第1期67-70,共4页北京理工大学学报（英文版）

基　　金：SponsoredbytheNationalNaturalScienceFoundation ( 5 0 2 760 0 4)

摘　　要：Supercavitation dynamic characteristics around a hydrofoil are studied with both high-speed visualization and drag and lift measurements. In the supercavitation condition, the cavitation area covers the entire surface of the foil. There is a distinct interface between the main flow and the supercavitating flow regions. The cavitating region is filled with cavitation bubble and water mixture. Small fluctuations of the interface are observed, which indicates that even a relative smooth surface is formed in this state, the interface is unsteady. The minimum drag is to be obtained in the supercavitation condition.Supercavitation dynamic characteristics around a hydrofoil are studied with both high-speed visualization and drag and lift measurements. In the supercavitation condition, the cavitation area covers the entire surface of the foil. There is a distinct interface between the main flow and the supercavitating flow regions. The cavitating region is filled with cavitation bubble and water mixture. Small fluctuations of the interface are observed, which indicates that even a relative smooth surface is formed in this state, the interface is unsteady. The minimum drag is to be obtained in the supercavitation condition.

关 键 词：SUPERCAVITATION high-speed visualization drag coefficient 

分 类 号：TV131.32[水利工程—水力学及河流动力学]