输流管道压力脉动计算分析  

Calculation Analyze of Pressure Pulsation in Fluid Flowing Pipeline

作　　者：周红[1] 刘永寿[1] 岳珠峰[1] 

机构地区：[1]西北工业大学工程力学系,西安710072

出　　处：《机械科学与技术》2011年第9期1435-1438,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家高技术研究发展专项(863计划)(2007AA04Z404);陕西省自然科学基础研究计划项目(SJ08A17);西北工业大学科技创新基金资助项目(2008KJ02019);高等学校学科创新引智计划项目(B07050)资助

摘　　要：综合考虑流体的阻尼和压力脉动效应,建立了管内流体振动的波动方程;并采用驻波法对方程进行求解,得到了3种不同边界条件下压力脉动和液柱共振频率的表达式。推导了脉动压力在弯管处产生的激振力,并用Matlab数学软件绘出弯管处激振力变化的曲线图;通过弯管处的激振力分析,揭示了压力脉动引起管路系统振动的机理。Considering the influence of damp and pressure pulsation,the wave equation of fluid in the pipeline is established.The equation is solved with standing wave method and the expression of pressure pulsation and natural frequency of the fluid in three different boundary conditions are obtained.The exciting force produced by pressure pulsation inside an elbow pipe is analyzed and the curve diagram is given with the help of Matlab,which proved that the pressure pulsation is the main reason for pipe vibration.

关 键 词：输流管道 压力脉动 驻波法 激振力 

分 类 号：V229.5[航空宇航科学与技术—飞行器设计]