文献类型：期刊文献

中文题名：不同SK型静态混合器的流场特性及其混合效果分析

英文题名：Analysis of flow field characteristics and mixing performance of different SK-type static mixers

作者：Yu, Yongliang[1]; Wang, Yu[1]; Liu, Runyi[2]; Pei, Shuiwang[2]; Li, Guo[1]; Wang, Yanjie[1,2]; Xie, Linsheng[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Shanxi Jiangyang Chemical Co., Ltd., Shanxi, Taiyuan, 030003, China

年份：2026

卷号：77

期号：5

起止页码：2461

外文期刊名：Huagong Xuebao/CIESC Journal

收录：EI(收录号：20262921108200)

语种：中文

外文关键词：Mixers (machinery) - Mixing - Numerical models - Viscosity

摘要：For the continuous mixing process of three liquid substances, based on the internal component structure of the traditional SK-type static mixer, two improved internal component forms (X-SK and SS-SK) are proposed while maintaining its basic configuration characteristics. Computational fluid dynamics (CFD) methods are used to compare and analyze the flow and mixing characteristics of the traditional SK and the two improved structures in three completely miscible, low-viscosity fluid systems. Axial pressure distribution, maximum transverse interfacial pressure difference, coefficient of variation (CoV), and mixing index (MI) were employed to quantitatively evaluate the mixing performance and pressure loss characteristics of different internal elements. The results show that, compared with the conventional SK structure, the improved structures exhibit faster CoV decay and earlier MI enhancement at the same axial positions. In particular, the SS-SK structure reduces the CoV to below 0.05 within an axial distance of approximately 480—500 mm, with the outlet MI exceeding 0.97, whereas the outlet MI of the SK structure is about 0.90. Meanwhile, the total pressure drop of the improved structures increases by approximately 50%—60% relative to the SK structure, and the maximum transverse interfacial pressure difference rises to 150—190 Pa. Experimental investigations were conducted using the SS-SK static mixer. The results show good overall agreement between the experimental data and the numerical simulations, validating the rationality and predictive reliability of the proposed model. The present study provides numerical references for the structural improvement and selection of SK-type static mixers under similar physical properties and flow conditions. ? 2026, Materials China. All rights reserved.