| 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
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| Corresponding Author | Yu, Changping() |
| Source Publication | PHYSICS OF FLUIDS
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| 2022-03-01 | |
| Volume | 34Issue:3Pages:11 |
| ISSN | 1070-6631 |
| Abstract | 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 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000806479200007 |
| WOS Keyword | ENERGY ; SCALES |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | 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] |
| Funding Organization | National Key Research and Development Program of China (NKRDPC) ; National Natural Science Foundation of China (NSFC) |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | 于长平 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/89619 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 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 |
| Recommended Citation 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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