Scaling of energy spectra in weakly compressible turbulence | |
Dong YF(董宇峰); He GW(何国威) | |
刊名 | ACTA MECHANICA SINICA |
2017-06-01 | |
卷号 | 33期号:3页码:500-507 |
关键词 | Compressible Turbulence Energy Spectra Two-point Closure Space-time Correlation |
ISSN号 | 0567-7718 |
DOI | 10.1007/s10409-017-0663-x |
文献子类 | Article |
英文摘要 | 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. |
分类号 | 二类 |
WOS关键词 | Supersonic Isothermal Turbulence ; Flows |
WOS研究方向 | Engineering ; Mechanics |
语种 | 英语 |
CSCD记录号 | CSCD:6026220 |
WOS记录号 | WOS:000404898900003 |
资助机构 | 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) |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/60899] |
专题 | 力学研究所_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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