一端固定一端简支输流管道流固耦合振动分析  

Vibration Analysis of Liquid-filled Pipes with Fixed-hinged Under Fluid Structure Interaction

作　　者：刘昌领[1] 罗晓兰[1] 叶道辉[2] 段梦兰[1] 

机构地区：[1]中国石油大学(北京)海洋油气研究中心,北京102249 [2]江汉石油钻头股份有限公司,湖北武汉430223

出　　处：《机械与电子》2013年第7期19-23,共5页Machinery & Electronics

基　　金：国家科技重大专项(k01zs10001)

摘　　要：根据Hamilton原理,建立了一端固定、一端简支输液管道的流固耦合振动控制方程,采用直接解法解出了管道自由振动的固有频率、临界压力和临界流速的表达式。对某采油树管道进行了流固耦合振动计算,分析了流体的流速和压力对管道固有频率的影响,得到了固有频率、临界压力和临界流速与管道长度、流体压力和流速之间的关系曲线。In this paper, the control equations of fluid structure interaction vibration of liquid - filled pipes with fixed - hinged were established on the basis of Hamilton＇s vibration principle. The formulas of the natural frequency of the pipe, critical pressure and critical velocity of the liquid were obtained by means of direct method. The fluid structure interaction vibration of pipe of Christmas tree was calculated by this method, the influence of velocity and pressure of the liquid on the natural frequency of the pipe were analysed. And the curves of natural frequency, critical pressure and critical velocity with the length of the pipe, the pressure and velocity of the liquid are acquired.

关 键 词：流固耦合振动 直接解法 固有频率 临界流速 

分 类 号：TE973[石油与天然气工程—石油机械设备]