| 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.
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| Source Publication | PHYSICAL REVIEW E
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| 2013-08-14 | |
| Volume | 88Issue:2Pages:021001/1-021001/4 |
| ISSN | 1539-3755 |
| Abstract | Temporal 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. |
| Keyword | Temporal Decorrelation Compressible Isotropic Turbulence Space-time Correlation The Helmholtz Decomposition |
| Subject Area | 湍流 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000323159000001 |
| Funding Organization | National Natural Science Foundation of China [11232011, 11021262]; National Basic Research Program of China (973 Program) [2013CB834100] |
| Department | LNM湍流 |
| Classification | 一类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/47456 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | He, 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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