Effects of the Coriolis force in inhomogeneous rotating turbulence

doi:10.1063/5.0084098

	Effects of the Coriolis force in inhomogeneous rotating turbulence
	Hu RN(胡润宁)1,2; Li XL(李新亮)1,2 ; Yu ZP(于长平)1
通讯作者	Yu, Changping()
发表期刊	PHYSICS OF FLUIDS
	2022-03-01
卷号	34 期号:3 页码:11
ISSN	1070-6631
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.
DOI	10.1063/5.0084098
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000806479200007
关键词[WOS]	ENERGY ; SCALES
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
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]
项目资助者	National Key Research and Development Program of China (NKRDPC) ; National Natural Science Foundation of China (NSFC)
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	于长平
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/89619
专题	高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hu RN,Li XL,Yu ZP. Effects of the Coriolis force in inhomogeneous rotating turbulence[J]. PHYSICS OF FLUIDS,2022,34,3,:11.
APA	胡润宁,李新亮,&于长平.(2022).Effects of the Coriolis force in inhomogeneous rotating turbulence.PHYSICS OF FLUIDS,34(3),11.
MLA	胡润宁,et al."Effects of the Coriolis force in inhomogeneous rotating turbulence".PHYSICS OF FLUIDS 34.3(2022):11.

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