Abstract The flow patterns and power consumption of a six-blade Rushton turbine (RT) in a cylindrical vessel are characterized in this paper. We focus on the effects of the shape of the vessel base by studying two cases: a conical and a dished shape. In addition, the effects of the height of the vessel base (h2) are explored and four cases are considered, namely: h2/D = 1/10, 1/6, 1/5 and 1/3 (D: vessel diameter). In the second part of our investigation, a new design of baffles (a triangular-shaped baffle) is suggested and a comparison is made between the performance of the standard and the triangular baffles. The main findings revealed that the conical shape of the vessel base provides a slight enhancement in the axial circulation at almost the same power input for the dished bottomed vessel. For Re < 2 × 104, the power required by both types of baffles is the same; however, above this value of Re, a reduction by about 4% in power consumption is given by the standard baffles. Also, and for all shapes of baffles and vessel bases, a reduction in power consumption may be obtained by increasing the height of the vessel base.

中文翻译：

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搅拌系统中流动模式和功率要求的研究：挡板和容器底座设计的影响

摘要 本文表征了圆柱形容器中的六叶拉什顿涡轮 (RT) 的流动模式和功率消耗。我们通过研究两种情况来关注容器底部形状的影响：圆锥形和碟形。此外，探讨了血管底部高度 (h2) 的影响，并考虑了四种情况，即：h2/D = 1/10、1/6、1/5 和 1/3（D：血管直径） . 在我们调查的第二部分中，我们提出了一种新的挡板设计（三角形挡板），并对标准挡板和三角形挡板的性能进行了比较。主要发现表明，容器底部的圆锥形状在几乎相同的功率输入下为碟形底容器提供了轴向循环的轻微增强。对于 Re < 2 × 104，两种挡板所需的功率相同；然而，高于这个 Re 值，标准挡板会降低约 4% 的功耗。此外，对于所有形状的挡板和容器底座，可以通过增加容器底座的高度来降低功耗。