化工学报 ›› 2025, Vol. 76 ›› Issue (8): 3772-3788.DOI: 10.11949/0438-1157.20250035

• 综述与专论 • 上一篇    下一篇

气液固流化床直接数值模拟研究进展

马永丽1(), 安澍1, 杨捷1, 刘明言1,2()   

  1. 1.天津大学化工学院,天津 300350
    2.化学工程与低碳技术全国重点实验室(天津大学),天津 300350
  • 收稿日期:2025-01-08 修回日期:2025-02-20 出版日期:2025-08-25 发布日期:2025-09-17
  • 通讯作者: 刘明言
  • 作者简介:马永丽(1989—),女,博士,副教授,mayl@tju.edu.cn
  • 基金资助:
    国家自然科学基金面上项目(22178256);国家重点研发计划项目(2022YFF0705101)

A review on direct numerical simulation of gas-liquid-solid fluidized bed

Yongli MA1(), Shu AN1, Jie YANG1, Mingyan LIU1,2()   

  1. 1.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
    2.State Key Laboratory of Chemical Engineering and Low-carbon Technology(Tianjin University), Tianjin 300350, China
  • Received:2025-01-08 Revised:2025-02-20 Online:2025-08-25 Published:2025-09-17
  • Contact: Mingyan LIU

摘要:

气液固流化床在化工等过程工业中有着广阔的应用前景。但是,由于流动的复杂性(多尺度、非稳态和非线性等)和测试方法以及机理模型的局限性,还难以对其进行科学设计和放大。基于计算流体力学的数值模拟是量化描述三相流动的有效途径。三相流数值模拟方法分为模型化方法和直接数值模拟方法。其中,直接数值模拟是在没有引入曳力模型等的条件下,从微观尺度解析气泡、颗粒和流体间的相互作用,可以揭示气液固三相间的相互作用机理,是重点关注的方法。综述了常用的多相流动直接数值模拟方法,包括流体体积法、水平集法、界面跟踪法、浸没边界法、虚拟区域法、格子玻尔兹曼法和光滑粒子动力学法等,并分析了各种模拟方法的优势和不足,之后对三相流直接数值模拟的研究进展进行了评述,最后给出了目前三相流数值模拟方法存在的问题以及今后进一步研究的方向。

关键词: 气液固流, 多相流, 流态化, 计算流体力学, 直接数值模拟

Abstract:

Gas-liquid-solid fluidized bed has broad industrial application in chemical and other process industries. However, due to the complexity of the flow (with characteristics of multi-scale, non-stationary, nonlinear, etc.) and the limitations of multi-phase flow measuring techniques and mechanism models, it is still difficult to scientifically design it. At this time, numerical simulations based on computational fluid dynamics have become an effective way to quantitatively describe three-phase flow. The numerical simulation methods for three-phase flow are generally divided into modeling and direct numerical simulation. Among them, direct numerical simulation is to analyze the interaction between bubbles, particles and fluids at the microscopic scale without introducing drag models, which can reveal the interaction mechanisms between gas, liquid and solid phases and is a method that focuses on. The commonly used direct numerical simulation methods for multi-phase flow, such as volume of fluid, level-set, front tracking, immersed boundary, distributed lagrange multiplier/fictitious-domain, lattice Boltzmann and smoothed particle hydrodynamics are outlined, and the advantages and disadvantages of various simulation methods are compared. Afterwards, the research progress on direct numerical simulation of three-phase flow is reviewed. Finally, the existing problems in direct numerical simulation and future research directions are pointed out.

Key words: gas-liquid-solid flow, multi-phase flow, fluidization, computational fluid dynamics, direct numerical simulation

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