主动湍流中间歇性和多尺度的开始。

IF 9 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY Physical review letters Pub Date : 2025-02-28 DOI:10.1103/PhysRevLett.134.088302

Kolluru Venkata Kiran, Kunal Kumar, Anupam Gupta, Rahul Pandit, Samriddhi Sankar Ray

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引用次数: 0

摘要

最近的研究结果表明，活流体的高活性、混沌、非平衡状态可能与高雷诺数、惯性湍流有许多共同之处。我们现在显示，通过使用流体动力学模型，间歇性的开始和随之而来的欧拉和拉格朗日结构的多尺度函数作为细菌活性的函数。我们的研究结果跨越了低雷诺数和高雷诺数流动的世界，并开辟了使流动间歇性的有趣可能性。

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Onset of Intermittency and Multiscaling in Active Turbulence.

Recent results suggest that highly active, chaotic, nonequilibrium states of living fluids might share much in common with high Reynolds number, inertial turbulence. We now show, by using a hydrodynamical model, the onset of intermittency and the consequent multiscaling of Eulerian and Lagrangian structure functions as a function of the bacterial activity. Our results bridge the worlds of low and high Reynolds number flows as well as open up intriguing possibilities of what makes flows intermittent.

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来源期刊

Physical review letters 物理-物理：综合

CiteScore

16.50

自引率

7.00%

发文量

2673

审稿时长

2.2 months

期刊介绍： Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks

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