螺旋桨尾流中螺旋梢涡声场的解析计算  

Analytical calculation for the sound field of tip vortex in the propeller wake flow

作　　者：曹金林[1] 余春华[1] 

机构地区：[1]武汉工业学院机械工程学院,湖北武汉430023

出　　处：《武汉工业学院学报》2013年第2期41-44,共4页Journal of Wuhan Polytechnic University

摘　　要：通过将螺旋桨尾流中的螺旋梢涡近视地看成具有螺旋对称性的圆柱螺旋涡丝,本文推导出了毂涡和五根螺旋梢涡辐射声场的解析解,以及在给定参数下的数值仿真结果。计算表明速度场和压力场都是时间的基频和倍基频函数,压力脉动的特性得到体现。The tip vortex of the propeller wake flow is approximatively regarded as the cylindrical helical vortex filament with helical symmetry. In this paper, analytical formulation of the sound field is derivated which is induced by hub vortex and five - tip vortex, and the numerical simulation is obtained with the corresponding parameters. The result show that the velocity field and pressure field are the functions of the time ＇ s base frequency, and the characteristic of pressure pulsation is reflected.

关 键 词：螺旋桨 螺旋梢涡 速度场 压力场 

分 类 号：U664.33[交通运输工程—船舶及航道工程] O242[交通运输工程—船舶与海洋工程]