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

doi:10.1063/5.0246736

	Kinetic energy spectrum and transfer within the near-dissipation range of compressible isotropic turbulence
	Yang, Guowei1,2 ; Yan, Zheng 1; Wu, Junfeng 1; Wang, Jianchun 3; Yu ZP(于长平)4 ; Li XL(李新亮)4,5 ; Wang, Lifeng 1,6
通讯作者	Yan, Zheng([email protected]) ; Wang, Lifeng([email protected])
发表期刊	PHYSICS OF FLUIDS
	2025
卷号	37 期号:1 页码:20
ISSN	1070-6631
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.
DOI	10.1063/5.0246736
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001397809200020
关键词[WOS]	INCOMPRESSIBLE VISCOUS-FLUID ; DIRECT NUMERICAL SIMULATIONS ; SMALL-SCALE STRUCTURES ; LOCAL-STRUCTURE ; REYNOLDS ; ORDER ; BOTTLENECK ; DYNAMICS ; SCHEMES
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 China10.13039/501100012166[12302281] ; National Natural Science Foundation of China[2023YFA1608400] ; National Key R&D Program of China[2022M710459] ; China Postdoctoral Science Foundation
项目资助者	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
论文分区	一类/力学重要期刊
力学所作者排名	3+
RpAuthor	Yan, Zheng ; Wang, Lifeng
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/98187
专题	高温气体动力学国家重点实验室
作者单位	1.Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China; 2.China Acad Engn Phys, Grad Sch, Beijing 100088, Peoples R China; 3.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Guangdong, Peoples R China; 4.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China; 5.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 6.Peking Univ, Ctr Appl Phys & Technol, HEDPS, Beijing 100871, 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.Rp_Au:Yan, Zheng, Wang, Lifeng
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.