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Study of GLR and Inlet Velocity on Hydrocyclone for Fracturing Flow-Back Fluids

机译:用于压裂湿润流体的水力旋流器GLR和入口速度的研究

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In this work, based on the Reynolds stress model (RSM) of the computational fluid dynamics (CFD) software Fluent and experimental method, the velocity field, pressure characteristics, split ratio, and separation efficiency of the hydrocyclone are analyzed under different gas-liquid ratios (GLRs). For the inlet velocity, the lower limit is ascertained by the flow field stability, the upper limit is largely determined by the energy consumption, and the optimum range is 4 m/s to 10 m/s. Within the optimum range, the peak value of tangential velocity increases while the GLR increases, whereas the pressure and pressure drop decrease. With the increase in the GLR, the axial velocity decreases, and the locus of zero vertical velocity shifts inward. The increase in the GLR causes more gas to collect at the vortex finder, which hinders the discharge of the solid-liquid mixture from the overflow, and the larger the GLR, the faster the decrease in the split ratio. The separation efficiency of particles with a particle size of 15 mu m is increased by 6.75%, and the separation efficiency of particles with a particle size of 30 mu m is increased by 0.57%. Meanwhile, the separation efficiency is increased by 2.43%, and the cut size (d(50)) is reduced as the GLR increases.
机译:在这项工作中,基于雷诺应力模型(RSM)的计算流体动力学(CFD)软件流畅和实验方法,在不同的气液下分析了水力旋流器的速度场,压力特性,分流比和分离效率比率(GLRS)。对于入口速度,通过流场稳定地确定下限,上限主要由能量消耗确定,最佳范围为4米/秒至10m / s。在最佳范围内,切向速度的峰值在GLR增加时增加,而压力和压降降低。随着GLR的增加,轴向速度降低,零垂直速度的基因座向内移动。 GLR的增加导致更多的气体在涡旋探测器上收集,阻碍了从溢流的固体混合物的排出,并且GLR越大,分流比的降低越快。粒径为15μm的颗粒的分离效率增加了6.75%,粒径为30μm的颗粒的分离效率增加0.57%。同时,分离效率增加2.43%,随着GLR的增加,切割尺寸(D(50))降低。

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  • 来源
    《Mathematical Problems in Engineering》 |2019年第19期|7324136.1-7324136.12|共12页
  • 作者单位

    Shandong Univ Sci & Technol Coll Mech & Elect Engn Qingdao 266590 Shandong Peoples R China;

    Shandong Univ Sci & Technol Coll Mech & Elect Engn Qingdao 266590 Shandong Peoples R China;

    Shandong Univ Sci & Technol Coll Mech & Elect Engn Qingdao 266590 Shandong Peoples R China;

    Shandong Univ Sci & Technol Coll Mech & Elect Engn Qingdao 266590 Shandong Peoples R China;

    Shandong Univ Sci & Technol Coll Mech & Elect Engn Qingdao 266590 Shandong Peoples R China;

    Shandong Univ Sci & Technol Coll Chem & Environm Engn Qingdao 266590 Shandong Peoples R China;

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