流固耦合作用对螺旋桨强度影响的数值计算  

Numerical Calculation for the Effect of FSI on Marine Propeller Strength

作　　者：任弘[1] 李范春[1] 杜玲[1] 

机构地区：[1]大连海事大学交通运输装备与海洋工程学院,大连116026

出　　处：《武汉理工大学学报（交通科学与工程版）》2015年第1期144-147,152,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金面上项目资助(批准号:51379025)

摘　　要：为研究流固耦合作用对船舶螺旋桨强度的影响,并分析采用不同流固耦合方法所得计算结果的差异,结合实际工程,使用CFX对某船螺旋桨在特定工况进行CFD计算,并在ANSYS WORKBENCH中分别运用单向流固耦合和双向流固耦合方法对螺旋桨静应力及总变形量进行计算分析和比较,给出螺旋桨表面压力分布图,以及等效应力和总变形量随螺旋桨桨叶半径变化的关系曲线,并将二者计算结果进行对比.结果表明,采用不同流固耦合方法所得应力应变分布基本一致,最大等效应力出现在桨叶随边靠近桨毂处,叶梢位置变形最大.两种方法中采用双向流固耦合方法所得等效应力和总变形量峰值较大,且随着进速系数的增大,二者计算结果差距逐渐明显.The objective of this study is to examine the Fluid Structure Interaction（FSI）effect on marine propeller strength and analyze the results of different fluid-structure coupling method,referring to the practical situation of the project,use CFX for marine propeller CFD calculation in a certain condition,calculate and compare the results of equivalent stress and total deformation by different coupling method in ANSYS WORKBENCH respectively,give the propeller surface pressure contour,as well as the equivalent stress and total deformation curves of propeller blade under different radius.The results show that the equivalent stress and the total deformation distribution of different methods are basically the same,the maximum equivalent stress appears on the blade trailing edge near the hub,and the maximum deformation appears on the blade tip position.The maximum equivalent stress and maximum total deformation are larger by using two-way coupling method,along with the increase of advance coefficient,the difference of results between two algorithms is obvious.

关 键 词：船用螺旋桨 静应力分析 流固耦合 有限元仿真 

分 类 号：U661.44[交通运输工程—船舶及航道工程]