中文版 | English
Title

The effect of filter anisotropy on the large eddy simulation of turbulence

Author
Corresponding AuthorWang,Jianchun
Publication Years
2023-03-01
DOI
Source Title
ISSN
1070-6631
EISSN
1089-7666
Volume35Issue:3
Abstract
We study the effect of filter anisotropy and sub-filter scale (SFS) dynamics on the accuracy of large eddy simulation (LES) of turbulence, by using several types of SFS models including the dynamic Smagorinsky model (DSM), dynamic mixed model (DMM), and the direct deconvolution model (DDM) with the anisotropic filter. The aspect ratios (AR) of the filters for LES range from 1 to 16. We show that the DDM is capable of predicting SFS stresses accurately at highly anisotropic filter. In the a priori study, the correlation coefficients of SFS stress reconstructed by the DDM are over 90%, which are much larger than those of the DSM and DMM models. The correlation coefficients decrease as the AR increases. In the a posteriori studies, the DDM outperforms DSM and DMM models in the prediction of various turbulence statistics, including the velocity spectra, and probability density functions of the vorticity, SFS energy flux, velocity increments, strain-rate tensors and SFS stress. As the anisotropy increases, the results of DSM and DMM become worse, but DDM can give satisfactory results for all the filter-anisotropy cases. These results indicate that the DDM framework is a promising tool in developing advanced SFS models in the LES of turbulence in the presence of anisotropic filter.
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
First ; Corresponding
Funding Project
National Natural Science Foundation of China (NSFC)["91952104","92052301","12172161","12161141017"] ; National Numerical Windtunnel Project[NNW2019ZT1-A04] ; Shenzhen Science and Technology Program[KQTD20180411143441009] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0103] ; Department of Science and Technology of Guangdong Province[2019B21203001]
WOS Research Area
Mechanics ; Physics
WOS Subject
Mechanics ; Physics, Fluids & Plasmas
WOS Accession No
WOS:000957323400001
Publisher
ESI Research Field
PHYSICS
Scopus EID
2-s2.0-85150869169
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/524208
DepartmentDepartment of Mechanics and Aerospace Engineering
Affiliation
1.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Guangdong-Hong Kong-Macao Jt. Lab. for Data-Driven Fluid Mechanics and Engineering Applications,Southern University of Science and Technology,Shenzhen,518055,China
First Author AffilicationDepartment of Mechanics and Aerospace Engineering;  Southern University of Science and Technology
Corresponding Author AffilicationDepartment of Mechanics and Aerospace Engineering;  Southern University of Science and Technology
First Author's First AffilicationDepartment of Mechanics and Aerospace Engineering
Recommended Citation
GB/T 7714
Chang,Ning,Yuan,Zelong,Wang,Yunpeng,et al. The effect of filter anisotropy on the large eddy simulation of turbulence[J]. Physics of Fluids,2023,35(3).
APA
Chang,Ning,Yuan,Zelong,Wang,Yunpeng,&Wang,Jianchun.(2023).The effect of filter anisotropy on the large eddy simulation of turbulence.Physics of Fluids,35(3).
MLA
Chang,Ning,et al."The effect of filter anisotropy on the large eddy simulation of turbulence".Physics of Fluids 35.3(2023).
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