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	Computation of shallow wakes with the fractional step finite element method
	Jiang, Chunbo ; Yang, Chen ; Liang, Dongfang
	2010-10-12 ; 2010-10-12
关键词	Finite element method Fractional step PIV Shallow wake Turbulent model PLANE TURBULENT WAKES WATER LAYER PIV DATA FLOW CYLINDER ABSOLUTE ISLANDS Engineering, Civil Water Resources
中文摘要	The depth-integrated shallow-water equations are used to simulate shallow wake flow around a solid plate-like obstacle. Influences of different terms in the equations are analyzed by normalizing the momentum equation. A fractional step finite element method is used to discretize the shallow-water equations with third-order accuracy and uniform Courant-Friedrichs-Lewy (CFL) property. The established numerical model is used to simulate the shallow wake in three typical cases and the computational flow fields are compared with digital Particle Image Velocimetry (PIV) measurements and flow visualization pictures. Three turbulence models are considered: The results of the standard k-epsilon model agree with the experimental results better than those of zero equation and sub-depth scale turbulence models. Furthermore, the results of the simulation also show that it is the wake stability parameter that mainly controls the flow patterns of shallow wakes.
语种	英语 ; 英语
出版者	INT ASSOC HYDRAULIC RESEARCH ; MADRID ; PASEO BAJO VIRGEN DEL PUERTO, 3, 28005 MADRID, SPAIN
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82005]
专题	清华大学
推荐引用方式 GB/T 7714	Jiang, Chunbo,Yang, Chen,Liang, Dongfang. Computation of shallow wakes with the fractional step finite element method[J],2010, 2010.
APA	Jiang, Chunbo,Yang, Chen,&Liang, Dongfang.(2010).Computation of shallow wakes with the fractional step finite element method..
MLA	Jiang, Chunbo,et al."Computation of shallow wakes with the fractional step finite element method".(2010).

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