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Scale locality of helicity cascade in physical space

文献类型：期刊论文

作者Yan Z(闫政)1,2; Li XL(李新亮)1,2; Yu ZP(于长平)1,2
刊名PHYSICS OF FLUIDS
出版日期2020-06-01
卷号32期号:6页码:6
ISSN号1070-6631
DOI10.1063/5.0013009
英文摘要Scale locality is a key concept in turbulent cascade theory and is also associated with reflection symmetry. Vortex stretching is proven to participate in the helicity cascade process while destroying the conservative characteristic of enstrophy transfer in three-dimensional flows. Numerical evidence indicates that a turbulent structure with scale L will also largely transfer its helicity to structures with scales of around 0.3L. However, the scale locality of the helicity cascade is slightly weaker than that of the energy cascade in physical space. The weaker scale locality suggests that more scales should be involved for turbulent modeling of helical turbulence. Published under license by AIP Publishing.
分类号一类/力学重要期刊
WOS关键词ENERGY-TRANSFER ; ISOTROPIC TURBULENCE ; GRADIENT ; VORTICITY
WOS研究方向Mechanics ; Physics
语种英语
WOS记录号WOS:000542742100001
资助机构National Key Research and Development Program of China[2019YFA0405300] ; National Key Research and Development Program of China[2016YFA0401200] ; National Natural Science Foundation of China (NSFC)[91852203] ; Science Challenge Project[TZ2016001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDC01000000]
其他责任者Yu, Changping
源URL[http://dspace.imech.ac.cn/handle/311007/84774]  
专题力学研究所_高温气体动力学国家重点实验室
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Yan Z,Li XL,Yu ZP. Scale locality of helicity cascade in physical space[J]. PHYSICS OF FLUIDS,2020,32(6):6.
APA 闫政,李新亮,&于长平.(2020).Scale locality of helicity cascade in physical space.PHYSICS OF FLUIDS,32(6),6.
MLA 闫政,et al."Scale locality of helicity cascade in physical space".PHYSICS OF FLUIDS 32.6(2020):6.

入库方式： OAI收割

来源：力学研究所

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