Experimental insights into elasto-inertial transitions in Taylor-Couette flows.
Experimental insights into elasto-inertial transitions in Taylor-Couette flows.
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DOI：
10.1098/rsta.2022.0131
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发表时间：
2023-03-20
期刊：
影响因子：
5
通讯作者：
Balabani, S.
中科院分区：
文献类型：
--
作者：
Boulafentis, T.;Lacassagne, T.;Cagney, N.;Balabani, S.
自1923年Taylor的开创性工作以来，Taylor-Couette(TC)流一直被用作研究流体动力不稳定性和分叉现象的范例。牛顿TC流向惯性湍流的转变已经得到了广泛的研究和理解，而在过去的几年里，人们对复杂的粘弹性流体的TC流越来越感兴趣。向弹性湍流(ET)或弹性惯性湍流(EIT)的转变揭示了令人着迷的动力学和流动状态；根据流体的流变性，已报道了广泛的转变谱，包括旋转驻波、火焰模式(FP)和双涡(DW)。这些转变的性质以及ET和EIT之间的关系还没有完全理解。在这篇综述中，我们讨论了粘弹性流体TC流动的实验研究工作。我们概述了所采用的实验方法和感兴趣的无量纲参数，然后概述了惯性、弹性和弹性惯性驱动的湍流转变及其通过剪切变薄或颗粒悬浮的调节。对已发表的实验数据进行了整理，并提供了作为关键流体参数的函数的流动到EIT的图，以及对未来工作的展望。本文是《泰勒-库埃特及其相关流动--泰勒开创性哲学论文集百年纪念论文(第一部分)》主题的一部分。
Since the seminal work of Taylor in 1923, Taylor–Couette (TC) flow has served as a paradigm to study hydrodynamic instabilities and bifurcation phenomena. Transitions of Newtonian TC flows to inertial turbulence have been extensively studied and are well understood, while in the past few years, there has been an increasing interest in TC flows of complex, viscoelastic fluids. The transitions to elastic turbulence (ET) or elasto-inertial turbulence (EIT) have revealed fascinating dynamics and flow states; depending on the rheological properties of the fluids, a broad spectrum of transitions has been reported, including rotating standing waves, flame patterns (FP), and diwhirls (DW). The nature of these transitions and the relationship between ET and EIT are not fully understood. In this review, we discuss experimental efforts on TC flows of viscoelastic fluids. We outline the experimental methods employed and the non-dimensional parameters of interest, followed by an overview of inertia, elasticity and elasto-inertia-driven transitions to turbulence and their modulation through shear thinning or particle suspensions. The published experimental data are collated, and a map of flow transitions to EIT as a function of the key fluid parameters is provided, alongside perspectives for the future work. This article is part of the theme issue 'Taylor–Couette and related flows on the centennial of Taylor’s seminal Philosophical Transactions paper (part 1)'.
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