Lagrangian statistics in isotropic turbulent flows with deterministic and stochastic forcing schemes
文献类型：期刊论文
| 作者 | Chen, Jin-Cai; Jin GD(晋国栋) ; Zhang J(张健)
|
| 刊名 | Acta Mechanica Sinica
 |
| 出版日期 | 2015-02-01 |
| 卷号 | 31期号:1页码:25-31 |
| 通讯作者邮箱 | gdjin@lnm.imech.ac.cn |
| 关键词 | Isotropic turbulence Deterministic forcing scheme Stochastic forcing scheme Lagrangian statistical quantities |
| ISSN号 | 0567-7718 |
| 产权排序 | [Chen, Jin-Cai; Jin, Guo-Dong; Zhang, Jian] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China |
| 通讯作者 | Jin, GD (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. |
| 中文摘要 | Artificial input of energy into the flow is necessary to create and maintain a statistically stationary isotropic turbulence for sampling in studying the statistics. Due to the nonlinear coupling among different Fourier modes through the triadic interaction, whether or not various forcing schemes affect the statistics in turbulence is an important and open question. We present detailed comparison of Lagrangian statistics of fluids particles in forced isotropic turbulent flows in 128(3), 256(3), and 512(3) simulations, with Taylor-scale Reynolds numbers in the range of 64-171, using a deterministic and a stochastic forcing scheme, respectively. Several Lagrangian statistics are compared, such as velocity and acceleration autocorrelations, and moments of Lagrangian velocity increments. The differences in the Lagrangian statistics obtained from the two forcing schemes are shown to be small, indicating that the isotropic forcing schemes used have little effects on the Lagrangian statistics in the isotropic turbulence. |
| 分类号 | 二类 |
| 类目[WOS] | Engineering, Mechanical ; Mechanics |
| 研究领域[WOS] | Engineering ; Mechanics |
| 关键词[WOS] | LARGE-EDDY SIMULATION ; DIRECT NUMERICAL SIMULATIONS ; TIME CORRELATIONS ; PARTICLES ; VELOCITY ; FLUID |
| 收录类别 | SCI ; EI ; CSCD |
| 原文出处 | http://dx.doi.org/10.1007/s10409-015-0012-x |
| 语种 | 英语 |
| WOS记录号 | WOS:000350668900003 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/49897]  |
| 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 | Chen, Jin-Cai,Jin GD,Zhang J. Lagrangian statistics in isotropic turbulent flows with deterministic and stochastic forcing schemes[J]. Acta Mechanica Sinica,2015,31(1):25-31. |
| APA | Chen, Jin-Cai,晋国栋,&张健.(2015).Lagrangian statistics in isotropic turbulent flows with deterministic and stochastic forcing schemes.Acta Mechanica Sinica,31(1),25-31. |
| MLA | Chen, Jin-Cai,et al."Lagrangian statistics in isotropic turbulent flows with deterministic and stochastic forcing schemes".Acta Mechanica Sinica 31.1(2015):25-31. |
入库方式： OAI收割
来源：力学研究所
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