化工学报 ›› 2023, Vol. 74 ›› Issue (2): 546-558.DOI: 10.11949/0438-1157.20221091

• 综述与专论 • 上一篇    下一篇

微通道内屈服应力型流体的流变特性及多相流研究进展

项星宇(), 王忠东, 董艳鹏, 李守川, 朱春英, 马友光, 付涛涛()   

  1. 天津大学化工学院,化学工程联合国家重点实验室,天津 300072
  • 收稿日期:2022-08-01 修回日期:2022-09-16 出版日期:2023-02-05 发布日期:2023-03-21
  • 通讯作者: 付涛涛
  • 作者简介:项星宇(1998—),女,硕士研究生,xiang2021_@ tju.edu.cn
  • 基金资助:
    国家自然科学基金项目(21878212)

Progress on rheological properties and multiphase flow of yield stress fluids in microchannels

Xingyu XIANG(), Zhongdong WANG, Yanpeng DONG, Shouchuan LI, Chunying ZHU, Youguang MA, Taotao FU()   

  1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • Received:2022-08-01 Revised:2022-09-16 Online:2023-02-05 Published:2023-03-21
  • Contact: Taotao FU

摘要:

屈服应力型流体(YSFs)是一种典型的非牛顿流体,因其丰富的流变特性被广泛关注。屈服应力是高浓度的粒子分散系统和凝胶状物质(多相乳液、微胶囊、3D打印复杂结构、药物输送凝胶等)的基本特征。本文对微通道内简单屈服应力型流体的流动特征和流变行为,及其流变性对多相流系统的影响进行了综述,剖析了受限空间内流体流动与流体流变性,及多相流动力学和界面现象的耦合机制,并对亟需推进的研究方向进行了展望。为微通道内屈服应力型流体的数值模拟、实验研究和应用提供参考。

关键词: 微通道, 非牛顿流体, 屈服应力型流体, 气泡, 液滴

Abstract:

Yield stress-type fluids (YSFs) are typical non-Newtonian fluid that have received extensive attention due to their rich rheological properties. Yield stress is an essential feature in high concentration particle dispersion systems and gelatinous substances, such as multiphase emulsions, microencapsule, 3D printing of complex structures and drug delivery. In this paper, the flow characteristics and rheological behavior of simple yield stress fluid and the effects of rheology on multiphase flow systems are reviewed. The coupling mechanism of the fluid flow and fluid rheology, the multiphase flow dynamics, and interfacial phenomena in confined spaces are analyzed. The research directions that need to be promoted are prospected. It provides a reference for numerical simulation, experimental research and application of yield stress-based fluids in microchannels.

Key words: microchannel, non-Newtonian fluid, yield stress fluid, bubble, droplet

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