含砂石油对管道冲蚀的CFD模拟

CFD Simulation of Sandy Oil Erosion to Pipeline

应用Fluent软件,模拟含砂石油对三通管的冲蚀行为,找出三通管易发生磨损的位置,分析了管道放置方式、入口方向、速度和颗粒质量分数等对三通管冲蚀的影响。研究结果表明,当以三通管的支管为入口时,对于竖直放置的三通管,与入口方向正对的外侧壁面的磨损最严重,且下侧出口主管的磨损率要大于上侧出口支管的磨损率;对于水平放置的三通管,2个出口支管的磨损率基本相同,但重力的影响使管道底部的磨损比顶部的磨损严重;当以三通管的主管一端为入口时,磨损较严重的区域是三通管交汇处的2个拐角;磨损率随着速度或颗粒质量分数的增大而增大,但三通管最大磨损率的位置与速度和颗粒质量分数无关。

The Fluent software was applied to simulate the erosion behavior of sandy oil to three-way pipe and find out the position of the three-way pipe with which abrasion tends to occur. The effect of pipeline laying mode, inlet direction anti speed, anti particle mass concentration on the pipe erosion was analyzed. The reseaath findings show that when the branch pipe of three-way pipe is taken as the inlet, the external wall surface of vertical laying three-way pipe just opposite to the inlet direction has the most severe ahrasion. Moreover, the wear rate of downside outlet main pipe is greater than thai of upside outlet branch pipe. As for horizontal laying three-way pipe, the wear rate of two outlet branch pipes remains hasically the same. But the effec.t of gravity makes the wear of pipelitle hol- tom more severe than that of pipeline top. When one end of the main pipe of＂ three-way pipe is taken as the inlet, the seriously worn zones are two corners at the intersection of three-way pipe. The wear rate increases with the in- crease of velocity or particle mass eoncentralion. But the position and velocity of the maximum wear rate of three- way pipe have nothing to do with particle mass concentration.