四川轻化工大学学报（自然科学版）2023，Vol.36Issue(6)：41-48,8.DOI:10.11863/j.suse.2023.06.06
内外流作用下的U型管流致振动分析
Analysis of Flow Induced Vibration of U-tube Under Internal and External Flow
摘要
Abstract
In order to explore the fluid-induced vibration characteristics of U-tube under the combined action of internal and external fluids,the vibration characteristics of a single U-tube under the combined action of external flow of air and internal flow of water are studied based on ANSYS Workbench by using a one-way fluid-structure interaction method.The results show that the main excitation of the system comes from the external flow,which will affect the vibration amplitude and frequency of the steady-state response of the system;the internal flow has a more significant impact on the average displacement and natural frequency,and the reduction of the internal flow on the natural frequency of the U-tube of each order is about 11.9%;due to the differences in the action direction of the internal and external fluid forces,there exist an optimal damping internal flow velocity for each external flow velocity.Under certain flow velocity combinations(such as vout =10 m/s,vin =6 m/s),the average displacement of the U-tube can be reduced by more than 90%.关键词
U型管/内外流/流固耦合/振动特性Key words
U-tube/internal and external flow/fluid-structure interaction/vibration characteristics分类
通用工业技术引用本文复制引用
王骏,李鹏,王麒均..内外流作用下的U型管流致振动分析[J].四川轻化工大学学报（自然科学版）,2023,36(6):41-48,8.基金项目
国家自然科学基金项目(12172311) （12172311）
