Temporal decorrelations in compressible isotropic turbulence
文献类型：期刊论文
| 作者 | Li D(李栋); Zhang X(张星) ; He GW(何国威)
|
| 刊名 | PHYSICAL REVIEW E
 |
| 出版日期 | 2013-08-14 |
| 卷号 | 88期号:2页码:021001/1-021001/4 |
| 通讯作者邮箱 | hgw@lnm.imech.ac.cn |
| 关键词 | Temporal decorrelation compressible isotropic turbulence space-time correlation the Helmholtz decomposition |
| ISSN号 | 1539-3755 |
| 产权排序 | [Li, Dong; Zhang, Xing; He, Guowei] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China |
| 通讯作者 | He, GW (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. |
| 中文摘要 | 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. |
| 学科主题 | 湍流 |
| 分类号 | 一类 |
| 收录类别 | SCI ; EI |
| 资助信息 | National Natural Science Foundation of China [11232011, 11021262]; National Basic Research Program of China (973 Program) [2013CB834100] |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevE.88.021001 |
| 语种 | 英语 |
| WOS记录号 | WOS:000323159000001 |
| 公开日期 | 2013-09-27 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/47456]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Li D,Zhang X,He GW. Temporal decorrelations in compressible isotropic turbulence[J]. PHYSICAL REVIEW E,2013,88(2):021001/1-021001/4. |
| APA | Li D,Zhang X,&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. |
入库方式： OAI收割
来源：力学研究所
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