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为了研究油-水旋流器颗粒体积分数分布规律,应用计算流体力学数值模拟软件CFD,将湍流雷诺应力模型和多相流混合模型相结合,分别对单一直径颗粒分散相和由不同直径颗粒组成的分散相中颗粒体积分数和粒级效率进行模拟计算,得到油相云图、颗粒体积分数和粒级效率曲线。对比分析结果表明:油-水分离主要在锥段进行,轴心油核的大小随颗粒直径的变化而不同;大颗粒受到径向力作用大,容易分离;小颗粒受到水相阻力作用大,易从底流口排出;颗粒直径越大,分离效率越高。该结构旋流器对直径大于30μm颗粒分离效率较高。
In order to study the particle volume fraction distribution of the oil-water hydrocyclone, a computational fluid dynamics numerical simulation software CFD was used to combine the turbulent Reynolds stress model with the multiphase flow mixing model. The single particle size distribution and the particle size distribution Of the dispersed phase particle volume fraction and particle size efficiency simulation calculation, oil cloud chart, particle volume fraction and particle size efficiency curve. The results of comparative analysis show that the oil-water separation is mainly carried out in the conical section, and the size of the core oil core varies with the particle diameter; the large particles are greatly affected by the radial force and easily separated; the small particles are greatly affected by the water phase resistance, Easily from the bottom outlet discharge; the greater the particle diameter, the higher the separation efficiency. The structure of the cyclone for particles larger than 30μm diameter separation efficiency higher.