arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2408.06950cond-mat.softnlin.CDphysics.flu-dyn
收藏

主动湍流中间歇性的起始与多标度特性

Onset of Intermittency and Multiscaling in Active Turbulence

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

AI总结:

该研究通过流体动力学模型,揭示了主动湍流中随细菌活性变化产生的间歇性起始与结构函数多标度特性,衔接了高低雷诺数流动研究,为探索流动间歇性成因提供了新方向。

摘要:

近期研究结果表明,活性流体的高活性、混沌非平衡态,可能与高雷诺数惯性湍流存在诸多共性。我们借助流体动力学模型发现,随着细菌活性变化,欧拉与拉格朗日结构函数会出现间歇性起始及随之产生的多标度行为。该结果衔接了低雷诺数与高雷诺数流动领域,也为探究流动间歇性的成因开辟了有趣的研究方向。

英文摘要:

Recent results suggest that highly active, chaotic, non-equilibrium 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑