| Lagrangian statistics in isotropic turbulent flows with deterministic and stochastic forcing schemes | |
Chen, Jin-Cai; Jin GD(晋国栋) ; Zhang J(张健); Jin, GD (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
| |
| Source Publication | Acta Mechanica Sinica (IF:1.598[JCR-2018],1.617[5-Year]) |
| 2015-02-01 | |
| Volume | 31Issue:1Pages:25-31 |
| ISSN | 0567-7718 |
| Abstract | 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. |
| Keyword | Isotropic Turbulence Deterministic Forcing Scheme Stochastic Forcing Scheme Lagrangian Statistical Quantities |
| DOI | 10.1007/s10409-015-0012-x |
| URL | 查看原文 |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:000350668900003 |
| WOS Keyword | LARGE-EDDY SIMULATION ; DIRECT NUMERICAL SIMULATIONS ; TIME CORRELATIONS ; PARTICLES ; VELOCITY ; FLUID |
| WOS Research Area | Engineering ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Mechanics |
| Funding Organization | program "Dynamics of Particles in Flows: Fundamentals and Applications" in Sweden |
| Department | LNM湍流 |
| Classification | 二类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/49897 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Jin, GD (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Chen, Jin-Cai,Jin GD,Zhang J,et al. 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,&Jin, GD .(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. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| IMCAS2015-J-1.pdf（441KB） | 开放获取 | ODC ODbL | View Download | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment