船用复合材料螺旋桨稳态流固耦合尺度效应数值研究  

Numerical study on steady-state fluid-structure coupling scale effect of marine composite propeller

作　　者：陈章韬 黄政[1] 王式耀 柯林 CHEN Zhangtao;HUANG Zheng;WANG Shiyao;KE Lin(College of Naval Architecture and Ocean Engineering,Naval University of Engineering,Wuhan 430033,China;College of Power Engineering,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学舰船与海洋学院,湖北武汉430033 [2]海军工程大学动力工程学院,湖北武汉430033

出　　处：《推进技术》2024年第6期283-292,共10页Journal of Propulsion Technology

基　　金：国家自然科学基金(51179198);基础加强计划技术领域基金(2021-JCJQ-JJ-0366)。

摘　　要：为实现实尺度复合材料螺旋桨的流固耦合性能预报,针对船用复合材料螺旋桨在均匀流场中稳态流固耦合的尺度效应问题,本文基于Ansys Workbench建立了双向流固耦合算法,采用ACP模块对3种尺度的4381复合材料螺旋桨进行30°角铺层建模,分析了流固耦合下结构变形与敞水性能变化的尺度效应规律。研究结果表明:粘性力相对占比是刚性桨敞水性能尺度效应的主要因素;流固耦合最大变形比和螺距变形比均与缩尺比呈线性关系,因流体的附加刚度作用,最大变形比需在悬臂板挠度公式基础上作3%的修正;流固耦合后敞水性能的改变量与缩尺比呈线性关系,其尺度效应需在刚性桨敞水性能尺度效应关系上进一步作5%~7%的修正,修正量与复材桨压力中心区和桨叶的厚度均有一定关系。考虑流固耦合的复材桨尺度效应修正为不同尺度复材桨的数值计算和性能预报提供了有效参考。In order to achieve the fluid-structure coupling performance prediction of the real scale composite propeller,a bidirectional fluid-structure interaction algorithm was established based on Ansys Workbench to solve the problem of the scale effect of the steady fluid-structure interaction of the marine composite propeller in the uniform flow field.The ACP module was used to model the 30°angle laying of 4381 composite propellers with three scales,and the scale effect of structural deformation and open water performance change under fluid-structure interaction is analyzed.The results show that the relative proportion of viscous force is the main factor of open water performance scale effect of rigid propeller.The maximum deformation ratio and pitch ratio of fluid-structure coupling have a linear relationship with the scale ratio.Due to the additional stiffness of fluid,the maximum deformation ratio needs to be modified by 3%based on the deflection formula of cantilever plate.There is a linear relationship between fluid-structure coupling open water performance and scale ratio,and its scale effect needs to be further modified by 5%~7%on the scale effect relationship of rigid open water performance.The modified amount has a certain relationship with the pressure center area of composite blade and blade thickness.The scale effect modification of composite propeller considering fluid-structure interaction provides an effective reference for numerical calculation and performance prediction of composite propeller at different scales.

关 键 词：复合材料 螺旋桨 均匀流场 流固耦合 尺度效应 

分 类 号：U664.33[交通运输工程—船舶及航道工程]