螺旋度:湍流研究中的关键角色  

Helicity:A key role in turbulence

作　　者：于长平 胡润宁 甘润园 YU Changping;HU Running;GAN Runyuan(Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院力学研究所,北京100190 [2]中国科学院大学,北京100049

出　　处：《力学进展》2024年第4期700-738,共39页Advances in Mechanics

基　　金：国家自然科学基金项目(12072349,91852203,12232018);国家重点研发项目(2020YFA0711800,2019YFA0405300)资助.

摘　　要：螺旋度与湍流的拓扑结构以及动力学演化过程密切相关.本文首先详细阐述了螺旋度与流动结构之间具体的关联关系.随后,本文重点探讨了螺旋度在湍流输运中的作用,以及与其他物理效应之间的耦合关系.由于螺旋度对流动结构的表征作用以及对湍流动力学演化的重要影响,本文随后简要介绍了螺旋度在湍流建模中的应用.最后,本文对当前的研究进展进行了总结,指出了螺旋度与湍流相关研究的未来主要发展方向.Helicity is closely related to the topology of flow.This paper first explains the specific connection between helicity and flow structures.Subsequently,this paper focuses on elaborating the role of helicity in turbulence,as well as its coupling with other physical effects.Based on the crucial influence of helicity on flow structures and turbulent dynamics,this paper then briefly introduces the current applications of helicity in turbulence theory and simulation modeling.Finally,this paper summarizes the current research progress,outlining the overall advancement of helicity and the main directions for future studies.

关 键 词：螺旋度 湍流 螺旋湍流 湍流理论 螺旋动力学 

分 类 号：O351.2[理学—流体力学]