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Scaling of energy spectra in weakly compressible turbulence
Dong YF(董宇峰); He GW(何国威)
Source PublicationACTA MECHANICA SINICA
2017-06-01
Volume33Issue:3Pages:500-507
ISSN0567-7718
Abstract

We find an asymptotic expression for the characteristic timescales of decorrelation processes in weakly compressible and isothermal turbulence. This result is used in the Eddy-Damped Quasi-Normal Markovian equation to derive the scalings of compressible energy spectra: (1) if the acoustic waves are dominant, the compressible energy spectra exhibit scaling; (2) if local eddy straining is dominant, the compressible energy spectra are scaled as . Meanwhile, the energy spectra of incompressible components display the same scaling of as those in incompressible turbulence. The direct numerical simulations of weakly compressible turbulence are used to examine the scaling.

KeywordCompressible Turbulence Energy Spectra Two-point Closure Space-time Correlation
DOI10.1007/s10409-017-0663-x
Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000404898900003
WOS KeywordSupersonic Isothermal Turbulence ; Flows
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding OrganizationNational Natural Science Foundation of China(11302238 ; Strategic Priority Research Program(XDB22040104) ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; National Basic Research Program of China (973 Program)(2013CB834100) ; 11232011 ; 11572331 ; 11490551)
CSCD IDCSCD:6026220
DepartmentLNM湍流
Classification二类
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60899
Collection非线性力学国家重点实验室
Corresponding AuthorHe GW(何国威)
Recommended Citation
GB/T 7714
Dong YF,He GW. Scaling of energy spectra in weakly compressible turbulence[J]. ACTA MECHANICA SINICA,2017,33(3):500-507.
APA Dong YF,&He GW.(2017).Scaling of energy spectra in weakly compressible turbulence.ACTA MECHANICA SINICA,33(3),500-507.
MLA Dong YF,et al."Scaling of energy spectra in weakly compressible turbulence".ACTA MECHANICA SINICA 33.3(2017):500-507.
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