Hydrocyclones are commonly used liquid–solid separation devices in the mining, metallurgy, and energy industries and are known for their high efficiency and ease of maintenance. In this study, computational fluid dynamics (CFD) is used to investigate the impact of particle size distribution (PSD) width on the behavior of fluid and particles within a hydrocyclone. After validation of the reliability of the numerical model with experimental data, the fluid–solid flow characteristics are discussed. Key findings indicate that the PSD width significantly influences the pressure drop, separation efficiency, and particle behavior. The overall separation efficiencies for PSD widths of 0.1, 0.3, 0.5, and 0.7 are 68.4%, 65.5%, 56.2%, and 47.6%, respectively. A rise in the PSD width brings about a higher pressure drop and an enhanced tangential velocity. At a PSD width of 0.1, the separation efficiency is maximized, and the pressure drop is minimized. A wider PSD distribution leads to a higher number of internal vortices and an increased flow complexity. These findings provide valuable insights into the separation mechanisms of hydrocyclones, contributing to the design and optimization of these devices for improved performance.

中文翻译：

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宽粒径分布水力旋流器流型和分离性能的欧拉-拉格朗日研究


水力旋流器是采矿、冶金和能源行业中常用的液固分离装置，以其高效和易于维护而闻名。在本研究中，计算流体动力学 （CFD） 用于研究粒度分布 （PSD） 宽度对水力旋流器内流体和颗粒行为的影响。在用实验数据验证了数值模型的可靠性后，讨论了流-固流动特性。主要结果表明，PSD 宽度对压降、分离效率和颗粒行为有显著影响。PSD 宽度为 0.1、0.3、0.5 和 0.7 的总体分离效率分别为 68.4%、65.5%、56.2% 和 47.6%。PSD 宽度的增加会导致更高的压降和增强的切向速度。当 PSD 宽度为 0.1 时，分离效率最高，压降最小。较宽的 PSD 分布会导致内部涡流的数量增加，流动复杂性增加。这些发现为水力旋流器的分离机制提供了有价值的见解，有助于设计和优化这些装置以提高性能。