This paper presents a comprehensive review of the partitioned pipe mixer (PPM) and its design variants: the barrier-embedded partitioned pipe mixer (BPPM) and the groove-embedded partitioned pipe mixer (GPPM). These mixers utilize chaotic advection as their mixing mechanism in the laminar flow regime. The review first focuses on the flow and mixing characteristics of these mixers, considering the influence of the operating conditions and design variables. The advantages and flexibility of the BPPM and GPPM over the original PPM are highlighted. The investigation covers mixing performance in both the creeping and non-creeping flow regimes. In addition, this review examines the impact of thixotropy and fluid inertia on mixing performance of the mixers, revealing irregular trends. It emphasizes the importance of carefully considering thixotropy and inertia when selecting appropriate mixing protocols and operating conditions. Furthermore, the potential use of chaotic mixing by the BPPM in filtration processes is briefly reviewed. In conclusion, the review summarizes the limitations of the previous studies and suggesting future research directions. Further studies are expected to explore the potential of these types of mixers in improving mixing performance in various industries, particularly those dealing with rheologically complex fluids.

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中文翻译：

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分区管道混合器的现代变体回顾：设计、性能和应用

本文对分区管混合器 (PPM) 及其设计变体进行了全面综述：屏障嵌入式分区管混合器 (BPPM) 和凹槽嵌入分区管混合器 (GPPM)。这些混合器利用混沌平流作为层流状态下的混合机制。该评论首先关注这些混合器的流动和混合特性，考虑操作条件和设计变量的影响。BPPM 和 GPPM 相对于原始 PPM 的优势和灵活性得到了凸显。研究涵盖蠕动和非蠕动流态下的混合性能。此外，本综述还研究了触变性和流体惯性对混合器混合性能的影响，揭示了不规则的趋势。它强调了在选择适当的混合方案和操作条件时仔细考虑触变性和惯性的重要性。此外，还简要回顾了 BPPM 在过滤过程中混沌混合的潜在用途。总之，该综述总结了以往研究的局限性并提出了未来的研究方向。预计进一步的研究将探索这些类型的混合器在提高各个行业的混合性能方面的潜力，特别是那些处理流变复杂流体的行业。该综述总结了以往研究的局限性并提出了未来的研究方向。预计进一步的研究将探索这些类型的混合器在提高各个行业的混合性能方面的潜力，特别是那些处理流变复杂流体的行业。该综述总结了以往研究的局限性并提出了未来的研究方向。预计进一步的研究将探索这些类型的混合器在提高各个行业的混合性能方面的潜力，特别是那些处理流变复杂流体的行业。

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