Mixing of a viscoplastic fluid using Scaba 6SRGT impellers in a cylindrical vessel has been studied. Cuts have been introduced in each blade of the impeller in order to reduce the power requirements. Effects of the cut-height (h₂/D = 0, 0.015, 0.04, 0.065 and 0.09, respectively), cut-length (l/D = 0, 0.06, 0.12 and 0.18, respectively), and of the number of cuts (n_b = 1, 2, 3, 4, and 5) on the hydrodynamics and power consumption were explored. The suggested designs, compared to the classical Scaba 6SRGT impeller, display a reduction in power number by about 20%, 19.9% and 66.6% when the cut-height, cut-length and number of cuts are changed from h₂/D = 0 to 0.09, l/D = 0 to 0.18 and n_b = 1–5, respectively. However, the increased surface area of cuts is accompanied by a reduction in the size of radial jet of fluid, resulting thus in a weakened axial flow and a decrease in cavern size. As a result, the best trade-off between the reduced power consumption and enlarged cavern size correspond to the case n_b = 3, l/D = 0.12. The reduction in power number for this case is estimated to be as about 15%.

已经研究了使用Scaba 6SRGT叶轮在圆柱形容器中混合粘塑性流体的方法。为了减少功率需求，已经在叶轮的每个叶片中引入了切口。切割高度（分别为h ₂ / D  = 0、0.015、0.04、0.065和0.09），切割长度（分别为l / D  = 0、0.06、0.12和0.18）和切割次数的影响（n _b  = 1、2、3、4和5）对水动力和功耗进行了探讨。与传统的Scaba 6SRGT叶轮相比，建议的设计在从h ₂ / D改变切入高度，切入长度和切入次数时，功率值分别降低了约20％，19.9％和66.6％。 = 0至0.09，l / D  = 0至0.18和n _b  = 1-5。然而，切口的表面积增加伴随着流体的径向射流尺寸的减小，从而导致轴向流减弱和洞穴尺寸的减小。结果，在功耗降低和洞穴尺寸增大之间的最佳折衷对应于n _b  = 3，l / D  = 0.12的情况。在这种情况下，功率数的减少估计约为15％。