摘要
基于计算流体力学方法,建立了管内封堵器三维模型,对管内封堵器封堵过程中其周围流场进行数值模拟,得出管内封堵器封堵前后其周围流场中速度矢量、流体质点速度、湍动能的分布规律。对比封堵前后流场的模拟结果:管内封堵器的封堵进程变化影响流体质点速度和湍动能的分布;管内封堵器的机械结构会导致其局部位置和尾部流体产生漩涡,使管内流体流动紊乱,对封堵效果产生一定影响。研究结果对确保管内封堵作业安全和进行管内封堵器机械结构设计具有指导意义。
Based on the computational fluid dynamics, a three-dimensional model is established for numerical simulation of the flow field around a pipe stopper when it plugs the pipe. The distributions of the velocity vector, the particle velocity of the fluid and turbulent kinetic energy before and after the plugging are obtained. The simulation results show that the progress of the plugging operation has an impact on the distribution of the particle velocity and the turbulent kinetic energy, the mechanical structure of the pipe stopper causes vortexes of the fluid at some location and the tail-end, and forms a turbulent flow in the pipeline, which has an impact on the plugging performance. The research results give guidance on safe plugging and the structure design of the pipe stopper. （8 Figures, 7 References）
出处
《油气储运》
CAS
2013年第6期615-619,共5页
Oil & Gas Storage and Transportation
基金
国家自然科学基金"油气管道受阻瞬态流时空演化规律及气动智能封堵方法研究"
50905186
51174213
中国石油大学(北京)科研基金资助"基于气动肌腱的气动系统非线性控制策略研究"
KYJJ2012-04-19
国家留学回国人员科研启动资金
"油气管道在线气动隔离机器人瞬态流场变化规律研究"
教外司留[2010]1174
关键词
管内封堵器
流场
数值模拟
湍动能
pipe stopper, flow field, numerical simulation, turbulent kinetic energy
