近自由面三维振动水翼的水动力分析  

Hydrodynamic analysis of three-dimensional oscillating hydrofoil near free surface

作　　者：陈庆任[1] 叶恒奎[1] 杨向晖[2] 王曦[3] 

机构地区：[1]华中科技大学船舶与海洋工程学院,湖北武汉430074 [2]中国舰船研究设计中心,湖北武汉430064 [3]中国船级社武汉规范研究所,湖北武汉430022

出　　处：《华中科技大学学报（自然科学版）》2011年第10期28-31,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：中央高校基本科研业务费专项资助项目(2010MS026)

摘　　要：采用非定常面元法对近自由面三维振动水翼进行势流数值分析.在数值计算中,将Rankine源和偶极子置于边界面上,用时间步进法模拟水翼的势流场和自由表面波形.在自由面采用线性自由面边界条件,在尾涡面上布置偶极子及采用尾涡存储效应以满足库塔条件.确定了数值计算模型和相关参数,对不同展长的水翼在不同浸深、不同航速和不同振动频率下分别进行了计算,给出了水翼的推力、升力及自由表面波形等数值计算结果,并与相关文献结果进行了对比,证实了本方法是一种有效的时域算法.Unsteady panel method based on the Green′s theorem was developed for the hydrodynamic analysis of a three-dimensional oscillating hydrofoil moving near the free surface in the time domain.The Rankine sources and dipoles were distributed on boundary surfaces including the hydrofoil body surface and free surface.The dipoles were also placed on the wake surface and the Kutta condition was satisfied.A time-stepping panel method was employed.The numerical results of thrust force,lifting force and wave patterns were presented for the three-dimensional oscillating hydrofoil.The computed results were compared with other methods,and which verifies the effectively of the presented time-domain algorithm.

关 键 词：水动力 水翼 三维 时域 振动 自由面 

分 类 号：U661.1[交通运输工程—船舶及航道工程]