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

doi:10.1007/s10409-015-0012-x

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	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.
发表期刊	Acta Mechanica Sinica
	2015-02-01
卷号	31 期号:1 页码:25-31
ISSN	0567-7718
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.
关键词	Isotropic Turbulence Deterministic Forcing Scheme Stochastic Forcing Scheme Lagrangian Statistical Quantities
DOI	10.1007/s10409-015-0012-x
URL	查看原文
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:000350668900003
关键词[WOS]	LARGE-EDDY SIMULATION ; DIRECT NUMERICAL SIMULATIONS ; TIME CORRELATIONS ; PARTICLES ; VELOCITY ; FLUID
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
项目资助者	program "Dynamics of Particles in Flows: Fundamentals and Applications" in Sweden
课题组名称	LNM湍流
论文分区	二类
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/49897
专题	非线性力学国家重点实验室
通讯作者	Jin, GD (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
推荐引用方式 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.

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