细长旋转杆管柱与采出液耦合振动与碰撞数值方法研究  

Numerical method of coupling vibration and collision characteristics between slender rotating rod string and produced fluid

作　　者：岳欠杯[1] 王笑笑 王岗 李辉 徐燕璐 YUE Qianbei;WANG Xiaoxiao;WANG Gang;LI Hui;XU Yanu(School of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江大庆163318

出　　处：《振动工程学报》2025年第2期249-259,共11页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(52374034,11972114);黑龙江省自然科学基金资助项目(LH2022E018)。

摘　　要：针对浸没在流体中细长杆管柱间相互接触问题,基于嵌套网格技术,建立了细长旋转杆管柱与采出液耦合振动和碰撞的数值求解方法。将外环空流体域分为相互嵌套的子区域:背景网格和组件网格,推导了各嵌套区域流场边界传递信息的插值计算公式,采用分域方法对采出液流体域与杆柱固体域耦合进行求解,并建立了物理量传递方法和归一化收敛准则。搭建了垂直旋转杆柱与采出液耦合模拟实验装置,并将数值模拟结果和实验结果进行比较,验证了本文数值方法的正确性。研究了不同流体黏度、杆柱旋转速度条件下细长杆管柱间耦合振动与碰撞特性,结果表明:流体黏度越大,杆柱运动受流体黏性阻力的影响越明显,碰撞时的接触压力越小,振动越小;杆柱转速越大,振动越剧烈,杆柱受扭转变形的影响越明显,碰撞时的法向加速度越小,接触压力因此减小;当管柱间发生碰撞时,杆柱任意一点加速度发生突变,振动加剧。To address the problem of contact between the slender rods and tubes immersed in fluid,a numerical method is estab-lished to model the coupling vibration and collision between slender rotating rods and the produced fluid,based on the overset mesh technique.The outer annulus fluid domain is divided into two overset subregions:a background mesh and a component mesh.The interpolation formula is derived to transfer fluid field boundary information in each overset region.The subdomain method is used to solve the coupling between the produced fluid domain and the rod solid domain.Additionally,the transfer method of physical vari-ables and a normalized convergence criterion are established for the coupling interface.A coupling simulation device for a vertical ro-tating rod and produced fluid is established,and the numerical simulation results are compared with experimental results to validate the correctness of the numerical method presented in this paper.The coupled vibration and collision characteristics between the slen-der rods and tubes are studied under different fluid viscosities and rotational velocities.The results show that as fluid viscosity in-creases,the influence of viscous resistance on the motion of the rod becomes more pronounced,leading to lower contact pressure and reduced vibration.As the rotational speed of the rod increases,the vibration becomes more intense,the influence of torsional deformation on the rod’s motion becomes more significant,the normal acceleration during collision decreases,and the contact pres-sure decreases accordingly.When the collision occurs between the rods and tubes,the acceleration at each point of the rod changes abruptly,and the vibration intensity increases.

关 键 词：流固耦合振动 旋转杆柱 振动与碰撞 嵌套网格 分域方法 

分 类 号：O351.4[理学—流体力学] TE921.2[理学—力学]