The fractal cut impeller (FC impeller) based on fractal iteration of “H” pattern cuts on the impeller blades was introduced in the solid-liquid system with dense solid loading. The solid-liquid mixing characteristics in a stirred tank with pitched blade impeller (PB impeller) and FC impeller were comparatively investigated with experiment and numerical simulation. Results showed that FC impeller exhibited lower power consumption (P) and power number (N_p) compared to PB impeller at the same impeller speed. It could be also observed that increasing the fractal iteration number of FC impeller led to a further decrease in P and N_p. Meanwhile, FC impeller could reduce the size of impeller tailing vortex, enhance turbulent intensity and turbulent kinetic energy dissipation rate, and improve solid particle suspension quality compared to PB impeller under the constant power consumption, and an increase in fractal iteration number of FC impeller resulted in higher solid particle suspension efficiency. In addition, it was also found that the fractal arrangement of cuts on the impeller blades could increase turbulent intensity, enhance turbulent kinetic energy dissipation rate and facilitate an improvement in solid particle suspension quality as compared to a whole cut on the impeller blades with equal cut area.

将基于叶轮叶片“H”型切割分形迭代的分形切割叶轮（FC叶轮）引入具有密集固体负载的固液系统中。通过实验和数值模拟对斜叶叶轮（PB叶轮）和FC叶轮搅拌槽内的固液混合特性进行了对比研究。结果表明，在相同叶轮转速下，FC叶轮比PB叶轮表现出更低的功耗（P）和功率数（Np _{） 。}还可以观察到，增加 FC 叶轮的分形迭代次数导致P和N _p进一步下降。同时，在功耗恒定的情况下，FC叶轮较PB叶轮可以减小叶轮尾部涡的尺寸，增强湍流强度和湍流动能耗散率，改善固体颗粒悬浮质量，并导致FC叶轮的分形迭代次数增加。具有较高的固体颗粒悬浮效率。此外，还发现，与等切口叶轮叶片上的整体切口相比，叶轮叶片上切口的分形排列可以增加湍流强度，提高湍流动能耗散率，有利于改善固体颗粒悬浮质量区域。