Optimization of Transformable Multiple Impeller (AM Impeller) for Highly Viscous Fluids

Haruki Furukawa, Shigenobu Inoue, Takeru Tanaka, Yoshihito Kato, Shinsuke Asayama, Norihiro Morikawa, Seung-Tae Koh, Hyun-Gi Koh
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Abstract

Mixing performance in a laminar flow with a mixing Reynolds number less than 10 is greatly affected by the geometry of the impeller blades, and how to generate axial flow is important. The authors developed a new AM impeller with a low production cost by combining simple pitched paddle impellers in multiple stages. In this study, we attempted to further optimize the shape of the AM impeller by adding an assisting blade. Mixing performance was compared between Newtonian and non-Newtonian fluids. The mixing performance of the multiple-pitched-paddle-impeller was improved by the assisting blades, but the partial helical ribbon impeller was ineffective, and the most efficient AM impeller was the partial helical ribbon impeller without assisting blades, so further impeller simplification was attempted and a modified new AM impeller with the most efficient and simple structure was developed, because the most efficient AM impeller was a partial helical ribbon impeller without assisting blades.

Abstract Image

高粘性流体可变形多叶轮(AM叶轮)的优化设计
在混合雷诺数小于10的层流中,叶轮叶片的几何形状对混合性能影响很大,如何产生轴向流是重要的。将简单的多级斜桨叶轮组合在一起,研制出一种生产成本较低的新型AM叶轮。在本研究中,我们试图通过增加辅助叶片来进一步优化AM叶轮的形状。比较了牛顿流体和非牛顿流体的混合性能。辅助叶片改善了多桨桨叶轮的混合性能,但部分螺旋带形叶轮效果不佳,而无辅助叶片的部分螺旋带形叶轮是效率最高的调幅叶轮,因此对叶轮进行了进一步的简化,开发了一种结构最高效、最简单的改进型调幅叶轮。因为最有效的AM叶轮是不辅助叶片的部分螺旋带状叶轮。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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