液体管不同宽度微小缝隙泄漏数值模拟研究  

Numerical Simulation of Liquid Pipeline Gap Leakage Under Different Width

作　　者：石志标[1] 孙宇[1] 

机构地区：[1]东北电力大学机械工程学院,吉林吉林132012

出　　处：《东北电力大学学报》2017年第1期75-79,共5页Journal of Northeast Electric Power University

基　　金：吉林省科技发展计划项目(20100506)

摘　　要：为了给声波检测的基础应用提供理论指导,以便提高声波法检测液体管道泄漏的准确性,应用Ansys软件进行了不同缝隙宽度的液体管道泄漏数值模拟,得到在入口压力一定的情况下,缝隙宽度发生变化时泄漏位置的流场和压力场变化,研究其对泄漏发声的影响。结果表明:随着泄漏缝隙宽度的增加,泄漏缝隙处空泡发声强度增大;射流冲击泄漏缝隙的壁面以及空泡腐蚀现象将加速泄漏缝隙的扩展。In order to provide a theoretical guidance for the basic application research of acoustic detection and improve the accuracy of liquid pipeline leakage detection with acoustic wave detector, liquid pipeline leakage under different gap width has been simulated by ANSYS, obtained the changes of flow field and pressure field in the case of inlet pressure constant and the leak gap width changes, study its effect on the sound of the leak. The result show that the strength of vacuoles sound will grow with the changes of leak gap width, the spread of leak gap will accelerate because of jet attack the wall of leak gap and cavitation corrosion.

关 键 词：液体管道 微小缝隙 数值模拟 

分 类 号：TK730[交通运输工程—轮机工程]