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Kinetic energy spectrum and transfer within the near-dissipation range of compressible isotropic turbulence

文献类型：期刊论文

作者Yang, Guowei5,6; Yan, Zheng6; Wu, Junfeng6; Wang, Jianchun4; Yu ZP(于长平)3; Li XL(李新亮)2,3; Wang, Lifeng1,6
刊名PHYSICS OF FLUIDS
出版日期2025
卷号37期号:1页码:20
ISSN号1070-6631
DOI10.1063/5.0246736
通讯作者Yan, Zheng(yan_zheng2021@163.com) ; Wang, Lifeng(wang_lifeng@iapcm.ac.cn)
英文摘要The analysis of kinetic energy spectrum and dissipation mechanisms plays a crucial role in both theoretical examination and real-world implementations within compressible turbulent flows. The previous works within the near-dissipation range are conducted within the framework of incompressible turbulent flow dynamics. We investigate the kinetic energy spectrum and transfer within the near-dissipation range of compressible isotropic turbulent flows via highly resolved direct numerical simulations with different turbulent Mach numbers ( Mt). We found that in compressible turbulent flows, the kinetic energy spectrum model is significantly influenced by the turbulent Mach number, with a more pronounced tail as the turbulent Mach number increases. Within the near-dissipation range, there exist strong local spatial fluctuations of the kinetic energy flux with the increase in grid resolution. The viscous dissipation can be decomposed into solenoidal and dilatational components, and its dilatational component leads to stronger intermittency within the near-dissipation range. Besides, the high turbulent Mach number also leads to a stronger dissipation, which serves as an alternative factor for the high intermittency within the near-dissipation range in compressible turbulent flows. The uncovered high intermittency provides a theoretical foundation for the prediction of intense events and the development of turbulent modelings.
分类号一类/力学重要期刊
WOS关键词INCOMPRESSIBLE VISCOUS-FLUID ; DIRECT NUMERICAL SIMULATIONS ; SMALL-SCALE STRUCTURES ; LOCAL-STRUCTURE ; REYNOLDS ; ORDER ; BOTTLENECK ; DYNAMICS ; SCHEMES
资助项目National Key Research and Development Program of China10.13039/501100012166[12302281] ; National Natural Science Foundation of China[2023YFA1608400] ; National Key R&D Program of China[2022M710459] ; China Postdoctoral Science Foundation
WOS研究方向Mechanics ; Physics
语种英语
WOS记录号WOS:001397809200020
资助机构National Key Research and Development Program of China10.13039/501100012166 ; National Natural Science Foundation of China ; National Key R&D Program of China ; China Postdoctoral Science Foundation
其他责任者Yan, Zheng ; Wang, Lifeng
源URL[http://dspace.imech.ac.cn/handle/311007/98186]  
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.Peking Univ, Ctr Appl Phys & Technol, HEDPS, Beijing 100871, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China;
4.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Guangdong, Peoples R China;
5.China Acad Engn Phys, Grad Sch, Beijing 100088, Peoples R China;
6.Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China;
推荐引用方式
GB/T 7714		 Yang, Guowei,Yan, Zheng,Wu, Junfeng,et al. Kinetic energy spectrum and transfer within the near-dissipation range of compressible isotropic turbulence[J]. PHYSICS OF FLUIDS,2025,37(1):20.
APA Yang, Guowei.,Yan, Zheng.,Wu, Junfeng.,Wang, Jianchun.,于长平.,...&Wang, Lifeng.(2025).Kinetic energy spectrum and transfer within the near-dissipation range of compressible isotropic turbulence.PHYSICS OF FLUIDS,37(1),20.
MLA Yang, Guowei,et al."Kinetic energy spectrum and transfer within the near-dissipation range of compressible isotropic turbulence".PHYSICS OF FLUIDS 37.1(2025):20.

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来源：力学研究所

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