This article addresses design modification to a flat‐blade static mixer to enhance mixing performance. The static mixer elements used in this work consist of four blades with curvature made to intensify turbulent‐like flow, while reducing the pressure drop. The blades were mounted on a cylindrical housing with 45° rotation relative to the axial direction. The mixer assembly was used in three different arrangements of 8, 10, and 14 elements for a range of Reynolds number between 600 and 7,000. The coefficient of variance (COV) of samples was used to measure the mixing quality. The curved‐blade mixer provides considerable improvement in mixing quality compared with the flat‐blade mixer and comparable to the SMX mixer. Compared with the flat‐blade static mixer, the new design reduces the COV by up to about 50%. This effect is more pronounced when the number of mixing elements increases. Furthermore, the friction factors for the modified mixer, obtained at a wide range of Reynolds number, were apparently smaller than those for the flat‐blade, SMX, and SMV mixers. The correlation presented for the friction factor, when all mixer arrangements and aspect ratios were considered, supports the experimental data with ±15% deviation.

中文翻译：

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通过弧形叶片静态混合器提高混合性能

本文介绍了对扁平叶片静态混合器的设计修改，以增强混合性能。这项工作中使用的静态混合器元件由四个叶片组成，这些叶片的曲率可增强湍流，同时减小压降。将叶片安装在相对于轴向旋转45°的圆柱形外壳上。混合器组件以8、10和14个元素的三种不同排列方式使用，雷诺数范围介于600和7,000之间。样品的变异系数（COV）用于测量混合质量。与平叶片搅拌机和SMX搅拌机相比，弧叶片搅拌机在混合质量上有显着提高。与平叶片静态混合器相比，新设计可将COV降低多达50％。当混合元素的数量增加时，这种效果更加明显。此外，在宽范围的雷诺数下获得的改进型混合器的摩擦系数明显小于平叶片，SMX和SMV混合器的摩擦系数。当考虑所有混合器的布置和纵横比时，摩擦系数的相关性支持±15％偏差的实验数据。