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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.
Source PublicationActa Mechanica Sinica
2015-02-01
Volume31Issue:1Pages:25-31
ISSN0567-7718
AbstractArtificial 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.
KeywordIsotropic Turbulence Deterministic Forcing Scheme Stochastic Forcing Scheme Lagrangian Statistical Quantities
DOI10.1007/s10409-015-0012-x
URL查看原文
Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000350668900003
WOS KeywordLARGE-EDDY SIMULATION ; DIRECT NUMERICAL SIMULATIONS ; TIME CORRELATIONS ; PARTICLES ; VELOCITY ; FLUID
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding Organizationprogram "Dynamics of Particles in Flows: Fundamentals and Applications" in Sweden
DepartmentLNM湍流
Classification二类
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49897
Collection非线性力学国家重点实验室
Corresponding AuthorJin, 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.
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