基于流固耦合方法的两自由度水翼流激振动特性研究  

Study on Flow-induced Vibration Characteristics of 2-DOF Hydrofoil Based on Fluid-Structure Coupling Method

作　　者：姜宜辰 王传晟 李劲光 王春旭 王晴 Yichen Jiang;Chuansheng Wang;Jingguang Li;Chunxu Wang;Qing Wang(School of Naval Architecture,Dalian University of Technology,Dalian 116024,China;AVIC Aerodynamics Research Institute,Harbin 150001,China;China Ship Development and Design Center,Wuhan 430064,China)

机构地区：[1]School of Naval Architecture,Dalian University of Technology,Dalian 116024,China [2]AVIC Aerodynamics Research Institute,Harbin 150001,China [3]China Ship Development and Design Center,Wuhan 430064,China

出　　处：《哈尔滨工程大学学报（英文版）》2023年第4期775-794,共20页Journal of Marine Science and Application

基　　金：supported by the National Natural Science Foundation of China(Grant No.52001043);the Chinese Academy of Sciences Youth Innovation Promotion Association(Grant No.2020205);the Fundamental Research Funds for the Central Universities(Grant No.DUT22GF202 and DUT20TD108);Liaoning Revitalization Talents Program(Grant No.XLYC1908027).

摘　　要：The flutter of a hydrofoil can cause structural damage and failure,which is a dangerous situation that must be avoided.In this work,based on computational fluid dynamics and structural finite element methods,a co-simulation framework for the flow-induced vibration of hydrofoil was established to realize fluid-structure interaction.Numerical simulation research was conducted on the flow-induced vibration characteristics of rigid hydrofoil with 2-DOF under uniform flow,and the heave and pitch vibration responses of hydrofoil were simulated.The purpose is to capture the instability of hydrofoil vibration and evaluate the influence of natural frequency ratio and inertia radius on vibration state to avoid the generation of flutter.The results indicate that when the inflow velocity increases to a certain critical value,the hydrofoil will enter the flutter critical state without amplitude attenuation.The attack angle of a hydrofoil has a significant impact on the vibration amplitude of heave and pitch.Additionally,the natural frequency ratio and inertia radius of the hydrofoil significantly affect the critical velocity of the flutter.Adjusting the natural frequency ratio by reducing the vertical stiffness or increasing the pitch stiffness can move the vibration from a critical state to a convergent state.

关 键 词：HYDROFOIL FLUTTER Flow-induced vibration Fluid-structure interaction Critical velocity 

分 类 号：U661.44[交通运输工程—船舶及航道工程]