对冲式消能器的消能效率及模态分析  

Energy Dissipation Efficiency and Modal Analysis of Offset Energy Eliminator

作　　者：王宁宁 陈卓 WANG Ning-ning;CHEN Zhuo(Petroleum Engineering Institute,Xi’an Shiyou University,Xi’an 710065,China)

机构地区：[1]西安石油大学石油工程学院,陕西西安710065

出　　处：《管道技术与设备》2022年第2期51-54,共4页Pipeline Technique and Equipment

摘　　要：文中利用ANSYS中的Fluent流体分析软件、静力学软件和模态分析软件进行了单向流固耦合仿真,分析了流体为压裂返排液时,该消能装置在一定高压范围和管径范围内的消能效率以及固有频率变化情况。流体分析表明,随着进口总压不断增高,对冲式消能器的消能效率基本稳定在70%;由于对冲产生涡流自耗,消能器进出口的速度未发生突增。模态分析表明:对冲消能器固有频率随着模态振型阶数的增大而增大,不随进口总压改变而改变;在一定范围内,适当增加壁厚,可提高结构的最低固有频率,降低流体对结构激励下的不良影响。The energy dissipation efficiency and natural frequency variation of the energy dissipation device in a certain range of high pressure and pipe diameter were analyzed when the fluid was fracturing flowback fluid,in this paper,by using ANSYS software Fluent fluid analysis software,statics and modal analysis software for the one⁃way fluid⁃solid coupling simulation.Fluid analysis shows that with the increase of inlet pressure,the energy dissipation efficiency of the offset energy eliminator is basically stable at 70%.There is no sudden increase in the inlet and outlet velocity of the energy eliminator due to eddy current consump⁃tion.Modal analysis shows that the natural frequency of the offset energy eliminator increases with the increase of modal mode or⁃der and does not change with the change of inlet pressure.In a certain range,appropriately increasing wall thickness can increase the minimum natural frequency of structure and reduce the adverse effect of fluid on structure excitation.

关 键 词：对冲 消能 流固耦合 模态分析 

分 类 号：TE94[石油与天然气工程—石油机械设备]