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Temporal decorrelations in compressible isotropic turbulence
Li D(李栋); Zhang X(张星); He GW(何国威); He, GW (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
Source PublicationPHYSICAL REVIEW E
2013-08-14
Volume88Issue:2Pages:021001/1-021001/4
ISSN1539-3755
AbstractTemporal decorrelations in compressible isotropic turbulence are studied using the space-time correlation theory and direct numerical simulation. A swept-wave model is developed for dilatational components, while the classic random sweeping model is proposed for solenoidal components. The swept-wave model shows that the temporal decorrelations in dilatational fluctuations are dominated by two physical processes: random sweeping and wave propagation. These models are supported by the direct numerical simulation of compressible isotropic turbulence, in the sense that all curves of normalized time correlations for different wave numbers collapse into a single one using the normalized time separations. The swept-wave model is further extended to account for a constant mean velocity.
KeywordTemporal Decorrelation Compressible Isotropic Turbulence Space-time Correlation The Helmholtz Decomposition
Subject Area湍流
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000323159000001
Funding OrganizationNational Natural Science Foundation of China [11232011, 11021262]; National Basic Research Program of China (973 Program) [2013CB834100]
DepartmentLNM湍流
Classification一类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47456
Collection非线性力学国家重点实验室
Corresponding AuthorHe, GW (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Li D,Zhang X,He GW,et al. Temporal decorrelations in compressible isotropic turbulence[J]. PHYSICAL REVIEW E,2013,88(2):021001/1-021001/4.
APA Li D,Zhang X,He GW,&He, GW .(2013).Temporal decorrelations in compressible isotropic turbulence.PHYSICAL REVIEW E,88(2),021001/1-021001/4.
MLA Li D,et al."Temporal decorrelations in compressible isotropic turbulence".PHYSICAL REVIEW E 88.2(2013):021001/1-021001/4.
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