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中文摘要：
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。（图8，参7）
英文摘要：
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）
同期刊论文项目
同项目期刊论文
Numerical Investigation of the Dynamic Mechanical State of a Coal Pillar During Longwall Mining Pane
Pore Structure Characterization of Coal by Synchrotron Small-Angle X-ray Scattering and Transmission
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