Lagrangian statistics in isotropic turbulent flows with deterministic and stochastic forcing schemes

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Lagrangian statistics in isotropic turbulent flows with deterministic and stochastic forcing schemes
	Chen, Jin-Cai; Jin GD(晋国栋); Zhang J(张健)
刊名	Acta Mechanica Sinica
	2015-02-01
通讯作者邮箱	gdjin@lnm.imech.ac.cn
卷号	31 期号:1 页码:25-31
关键词	Isotropic turbulence Deterministic forcing scheme Stochastic forcing scheme Lagrangian statistical quantities
ISSN号	0567-7718
通讯作者	Jin, GD (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
产权排序	[Chen, Jin-Cai; Jin, Guo-Dong; Zhang, Jian] 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
内容类型	期刊论文
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.