Optimizing hydrocyclone inlet design is regarded as an effective strategy to mitigate the adverse effect of particle misplacement and improves separation efficiency. This work proposes innovative hydrocyclone designs based on spiral inlet with a specific spiral angle and tangential inlet with a specific curvature radius. The new designs are evaluated and compared with a standard design using a validated two–fluid model. The separation performance, flow characteristics and volume fraction distribution are considered in the evaluation. An optimum spiral inlet design is identified, with an inlet spiral angle of 90° under the current conditions. This inlet design evidently improves the tangential velocity, strengthens the stability of the air core and reduces short-circuit flows. Additionally, the new inlets help improve the volume fraction of coarse particles in the region near the spigot, mitigating the misplacement of coarse and fine particles. This study offers a new perspective for improving hydrocyclone flows and performance.

中文翻译：

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用于提高分离性能的水力旋流器入口配置的数值研究


优化旋流器入口设计被认为是减轻颗粒错位不利影响、提高分离效率的有效策略。这项工作提出了基于具有特定螺旋角的螺旋入口和具有特定曲率半径的切向入口的创新水力旋流器设计。使用经过验证的双流体模型对新设计进行评估并与标准设计进行比较。评价时考虑了分离性能、流动特性和体积分数分布。确定了最佳螺旋入口设计，在当前条件下入口螺旋角为90°。这种入口设计明显提高了切向速度，增强了空芯的稳定性，减少了短路流。此外，新的入口有助于提高插口附近区域粗颗粒的体积分数，从而减少粗颗粒和细颗粒的错位。这项研究为改善水力旋流器的流量和性能提供了新的视角。