Baroudi Lina, Majji Madhu V, Peluso Stephen, Morris Jeffrey F
Department of Mechanical Engineering, Manhattan College, Bronx, NY 10471, USA.
Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Philos Trans A Math Phys Eng Sci. 2023 Mar 20;381(2243):20220125. doi: 10.1098/rsta.2022.0125. Epub 2023 Jan 30.
Although inertial particle-laden flows occur in a wide range of industrial and natural processes, there is both a lack of fundamental understanding of these flows and continuum-level governing equations needed to predict transport and particle distribution. Towards this effort, the Taylor-Couette flow (TCF) system has been used recently to study the flow behaviour of particle-laden fluids under inertia. This article provides an overview of experimental, theoretical and computational work related to the TCF of neutrally buoyant non-Brownian suspensions, with an emphasis on the effect of finite-sized particles on the series of flow transitions and flow structures. Particles, depending on their size and concentration, cause several significant deviations from Newtonian fluid behaviour, including shifting the Reynolds number corresponding to transitions in flow structure and changing the possible structures present in the flow. Furthermore, particles may also migrate depending on the flow structure, leading to hysteretic effects that further complicate the flow behaviour. The current state of theoretical and computational modelling efforts to describe the experimental observations is discussed, and suggestions for potential future directions to improve the fundamental understanding of inertial particle-laden flows are provided. This article is part of the theme issue 'Taylor-Couette and related flows on the centennial of Taylor's seminal paper (part 1)'.
尽管含惯性颗粒的流动出现在广泛的工业和自然过程中，但对于这些流动以及预测输运和颗粒分布所需的连续介质层面的控制方程，人们仍缺乏基本的理解。为了实现这一目标，泰勒-库埃特流（TCF）系统最近被用于研究含颗粒流体在惯性作用下的流动行为。本文概述了与中性浮力非布朗悬浮液的泰勒-库埃特流相关的实验、理论和计算工作，重点关注有限尺寸颗粒对一系列流动转变和流动结构的影响。颗粒根据其尺寸和浓度，会导致与牛顿流体行为的若干显著偏差，包括使对应于流动结构转变的雷诺数发生偏移，以及改变流动中可能存在的结构。此外，颗粒也可能根据流动结构发生迁移，从而导致滞后效应，使流动行为进一步复杂化。文中讨论了用于描述实验观测结果的理论和计算建模工作的当前状态，并提供了关于未来潜在方向的建议，以增进对含惯性颗粒流动的基本理解。本文是主题特刊“泰勒开创性论文发表百年之际的泰勒-库埃特流及相关流动（第1部分）”的一部分。
