基于流固耦合的管路泄漏振动信号仿真研究  

Simulation Study of Pipeline Leakage Vibration Signal Based on Fluid Structure Interaction

作　　者：李燕楠 刘树勇[1] 吴杰长[1] 苏攀[1] LI Yannan;LIU Shuyong;WU Jiechang;SU Pan(College of Power Engineering,Naval University of Engineering,Wuhan 430033)

机构地区：[1]海军工程大学动力工程学院,武汉430033

出　　处：《舰船电子工程》2020年第5期85-89,共5页Ship Electronic Engineering

基　　金：湖北省自然科学基金项目(编号:2017CFB672);海军工程大学科研基金项目(编号:425517K143)资助。

摘　　要：针对实际管路发生泄漏时,流体引发管路振动响应复杂,故障特征难以提取的问题,论文建立了管路结构和内部流场的模型,用双向流固耦合的方法对模型进行有限元仿真分析,观察到了泄漏管路中存在湍流、负压及脉动等现象,并研究了不同边界条件下泄漏振动信号的特征,为复杂管路的泄漏振动检测提供参考。It is a challenge to detect and locate the pipeline leakage because of the complex leak-included vibration respons⁃es and complicated process of fault feature extraction.In this paper,the model of pipeline structure and internal flow field is estab⁃lished and the finite element simulation analysis of the model is carried out by two way fluid structure interaction(FSI)approach.Turbulence,negative pressure and pulsation in the leaking pipeline are observed in the model.The feature of leak-included vibra⁃tion signal under different boundary conditions are studied,which provides reference for leakage detection of complex pipelines.

关 键 词：管路泄漏 双向流固耦合 有限元仿真 振动信号 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]