Subgrid scale formulation of optical flow for the study of turbulent flow
Cassisa, C.1; Simoens, S.2; Prinet, V.3; Shao, L.2
2011-12-01
发表期刊EXPERIMENTS IN FLUIDS
卷号51期号:6页码:1739-1754
文章类型Article
摘要We propose a new formulation of optical flow in the case of passive scalar or solid particles spreading in turbulent flows. The flow equation is defined from the scalar transport equation and a decomposition of our physical quantities (velocity and concentration fields) into two contributions, large and small scales, to account for the lack of spatial resolution in processed images. A subgrid scale model is introduced to model the small scale contribution. Comparisons are made with existing optical flow methods and Particle Image Velocimetry on synthetic and real sequences. The improvement of the estimation of velocity field by the proposed formulation is discussed in the case of a scalar turbulent propagation.
WOS标题词Science & Technology ; Technology
关键词[WOS]IMAGING VELOCIMETRY MEASUREMENTS ; GRADIENT TENSOR FIELD ; ROBUST ESTIMATION ; BOUNDARY-LAYER ; VARIABLE WIDTH ; STREET CANYON ; LINE SOURCE ; COMPUTATION ; SIMULATION ; DISPERSION
收录类别SCI
语种英语
WOS研究方向Engineering ; Mechanics
WOS类目Engineering, Mechanical ; Mechanics
WOS记录号WOS:000297167400019
引用统计
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/9973
专题模式识别国家重点实验室_多媒体计算与图形学
作者单位1.Tsinghua Univ, Lab Turbulence, Beijing 100084, Peoples R China
2.Ecole Cent Lyon, CNRS, Lab Fluid Mech & Acoust, UMR 5509, Ecully, France
3.Chinese Acad Sci, Natl Lab Pattern Recognit, Inst Automat, Beijing, Peoples R China
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Cassisa, C.,Simoens, S.,Prinet, V.,et al. Subgrid scale formulation of optical flow for the study of turbulent flow[J]. EXPERIMENTS IN FLUIDS,2011,51(6):1739-1754.
APA Cassisa, C.,Simoens, S.,Prinet, V.,&Shao, L..(2011).Subgrid scale formulation of optical flow for the study of turbulent flow.EXPERIMENTS IN FLUIDS,51(6),1739-1754.
MLA Cassisa, C.,et al."Subgrid scale formulation of optical flow for the study of turbulent flow".EXPERIMENTS IN FLUIDS 51.6(2011):1739-1754.
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