Effects of the Coriolis force in inhomogeneous rotating turbulence

doi:10.1063/5.0084098

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Effects of the Coriolis force in inhomogeneous rotating turbulence
	Hu, Running 1,2; Li, Xinliang 1,2; Yu, Changping 2
刊名	PHYSICS OF FLUIDS
	2022-03-01
卷号	34 期号:3 页码:11
ISSN号	1070-6631
DOI	10.1063/5.0084098
通讯作者	Yu, Changping()
英文摘要	The effects of the Coriolis force in inhomogeneous rotating turbulence are studied in the paper. Linear analyses and numerical simulations both reveal that energy is transported to the slowly rotating fields, and the energy distribution is proportional to omega(-2)(3) (x(3)). The scale energy is almost spatially self-similar, and the inverse cascade is reduced by inhomogeneous rotation. The corresponding evolution equation of the scale energy, i.e., the generalized Kolmogorov equation, is calculated to study the scale transport process in the presence of inhomogeneity. The equation is reduced to twice the energy transport equation at sufficiently large scales, which is verified by numerical results. In addition, the results reveal the dominant role of the corresponding pressure of the Coriolis force in the spatial energy transport. An extra turbulent convention effect in r-space solely in slowly rotating fields is also recognized. It can be associated with the small-scale structures with strong negative vorticity, whose formation mechanism is similar to rotating condensates. Finally, by vortex dynamic analyses, we find that the corresponding pressure of the Coriolis force transports energy by vorticity tube shrinking and thickening. The effects of the Coriolis force can be divided into two components: one is related to the gradient of rotation, and the other is associated with the strength of rotation.
资助项目	National Key Research and Development Program of China (NKRDPC)[2020YFA0711800] ; National Key Research and Development Program of China (NKRDPC)[2019YFA0405300] ; National Key Research and Development Program of China (NKRDPC)[2016YFA0401200] ; National Natural Science Foundation of China (NSFC)[91852203] ; National Natural Science Foundation of China (NSFC)[12072349]
WOS关键词	ENERGY ; SCALES
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:000806479200007
资助机构	National Key Research and Development Program of China (NKRDPC) ; National Natural Science Foundation of China (NSFC)
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89618]
专题	力学研究所_高温气体动力学国家重点实验室
通讯作者	Yu, Changping
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Hu, Running,Li, Xinliang,Yu, Changping. Effects of the Coriolis force in inhomogeneous rotating turbulence[J]. PHYSICS OF FLUIDS,2022,34(3):11.
APA	Hu, Running,Li, Xinliang,&Yu, Changping.(2022).Effects of the Coriolis force in inhomogeneous rotating turbulence.PHYSICS OF FLUIDS,34(3),11.
MLA	Hu, Running,et al."Effects of the Coriolis force in inhomogeneous rotating turbulence".PHYSICS OF FLUIDS 34.3(2022):11.