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Scaling of energy spectra in weakly compressible turbulence
Dong YF(董宇峰); He GW(何国威)
发表期刊ACTA MECHANICA SINICA
2017-06-01
卷号33期号:3页码:500-507
ISSN0567-7718
摘要

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.

关键词Compressible Turbulence Energy Spectra Two-point Closure Space-time Correlation
DOI10.1007/s10409-017-0663-x
收录类别SCI ; EI ; CSCD
语种英语
WOS记录号WOS:000404898900003
关键词[WOS]Supersonic Isothermal Turbulence ; Flows
WOS研究方向Engineering ; Mechanics
WOS类目Engineering, Mechanical ; Mechanics
项目资助者National 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记录号CSCD:6026220
课题组名称LNM湍流
论文分区二类
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/60899
专题非线性力学国家重点实验室
通讯作者He GW(何国威)
推荐引用方式
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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