IMECH-IR  > 高温气体动力学国家重点实验室
Detached eddy simulation for turbulent flows in a pipe with a snowflake fractal orifice
Zheng HW(郑洪伟); Nicolleau FCGA; Qin N; Zheng, HW (reprint author), Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China.
Source PublicationNEW APPROACHES IN MODELING MULTIPHASE FLOWS AND DISPERSION IN TURBULENCE, FRACTAL METHODS AND SYNTHETIC TURBULENCE
2012
Pages9-21
Conference Name8th Workshop on Synthetic Turbulence Models
Conference DateJUN 28-29, 2012
Conference PlaceParis, FRANCE
AbstractTurbulent flows in a pipe with a snowflake fractal shape (SF2) orifice are investigated using the parallelized, density-based, dynamic mesh and detached eddy simulation code (DG-DES) (Xia, PhD thesis, 2005; Xia and Qin, AIAA 2005-106, 2005). For comparison with the laboratory experiment, the flow is essentially a low Mach number flow. In order to tackle the low speed problem of the density based method, the SLAU (Simple Low dissipation AUSM) (Shima and Kitamura in 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, AIAA 2009-136, 2009) is adopted in this paper. The scheme exhibits low numerical dissipations for low speeds and needs no problem-dependent "cut-off Mach number". The results for the flows after the orifice are compared with those of the corresponding experiment (Chong, PhD thesis, 2008). Comparisons show good agreements in the mean velocity profiles at the different holes.
KeywordTurbulent Flows Dimension Surfaces
DepartmentLMFS流固耦合与数值计算(LHO)
Funding OrganizationUniv Pierre & Marie Curie, Inst Jean le Rond DAlembert
ISBN978-94-007-2505-8
URL查看原文
Indexed ByCPCI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47439
Collection高温气体动力学国家重点实验室
Corresponding AuthorZheng, HW (reprint author), Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Zheng HW,Nicolleau FCGA,Qin N,et al. Detached eddy simulation for turbulent flows in a pipe with a snowflake fractal orifice[C]NEW APPROACHES IN MODELING MULTIPHASE FLOWS AND DISPERSION IN TURBULENCE, FRACTAL METHODS AND SYNTHETIC TURBULENCE,2012:9-21.
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