The Effect of Helicity on Kinetic Energy Cascade in Compressible Helical Turbulence
文献类型:期刊论文
作者 | Yan Z(闫政); Li XL(李新亮); Fu YW(符耀威); Yu ZP(于长平) |
刊名 | ADVANCES IN APPLIED MATHEMATICS AND MECHANICS |
出版日期 | 2019-06-01 |
卷号 | 11期号:3页码:700-710 |
ISSN号 | 2070-0733 |
关键词 | Helicity direct numerical simulations kinetic energy cascade |
DOI | 10.4208/aamm.2018.s13 |
英文摘要 | Helicity plays an important role in the nonlinear dynamic process of compressible helical turbulence. We carry out direct numerical simulations (DNS) of compressible helical turbulence with different mean helicity at the grid resolution of 512(3) and try to explore the physical mechanism of kinetic energy cascade under the effect of helicity. The filtering method of coarse-graining is employed for scale decomposition to get kinetic energy flux. We get some novel conclusions in contrast to pre-existing knowledge in incompressible helical turbulence. Firstly, helicity also hinders the process of compressible kinetic energy cascade and reduces viscous dissipation. Secondly, helicity weakens some exclusive features, such as coupling between compressible and solenoidal mode of fluctuating velocity, energy transformation between kinetic energy and internal energy, and shocklets which appear only in compressible turbulence and serves as the role of constraint. |
分类号 | Q4 |
WOS关键词 | ISOTROPIC TURBULENCE ; NONLINEARITY ; DEPRESSION |
WOS研究方向 | Mathematics, Applied ; Mechanics |
语种 | 英语 |
WOS记录号 | WOS:000456198100014 |
资助机构 | Chinese Academy of Sciences [XDA17030100] ; NSFC [91852203, 11472278] ; National Key Research and Development Program of China [2016YFA0401200] ; Science Challenge Project [TZ2016001] |
其他责任者 | Yu, CP |
源URL | [http://dspace.imech.ac.cn/handle/311007/78444] |
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 ZP(于长平) |
作者单位 | 1.{Yan, Zheng、Li, Xinliang、Fu, Yaowei、Yu, Changping} Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China 2.{Yan, Zheng、Li, Xinliang、Fu, Yaowei、Yu, Changping} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Yan Z,Li XL,Fu YW,et al. The Effect of Helicity on Kinetic Energy Cascade in Compressible Helical Turbulence[J]. ADVANCES IN APPLIED MATHEMATICS AND MECHANICS,2019,11(3):700-710. |
APA | Yan Z,Li XL,Fu YW,&Yu ZP.(2019).The Effect of Helicity on Kinetic Energy Cascade in Compressible Helical Turbulence.ADVANCES IN APPLIED MATHEMATICS AND MECHANICS,11(3),700-710. |
MLA | Yan Z,et al."The Effect of Helicity on Kinetic Energy Cascade in Compressible Helical Turbulence".ADVANCES IN APPLIED MATHEMATICS AND MECHANICS 11.3(2019):700-710. |
入库方式: OAI收割
来源:力学研究所
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