Subgrid scale formulation of optical flow for the study of turbulent flow

	Subgrid scale formulation of optical flow for the study of turbulent flow
	Cassisa, C.1; Simoens, S.2; Prinet, V.3; Shao, L.2
发表期刊	EXPERIMENTS IN FLUIDS
	2011-12-01
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	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/9973
专题	多模态人工智能系统全国重点实验室_多媒体计算
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
推荐引用方式 GB/T 7714	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.