Generation of Suburban Terrain Inflow Conditions for Large Eddy Simulations

淡江大學機構典藏 > 行政單位 > 研究發展處 > 風工程研究中心 > 會議論文 > Item 987654321/93177

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Title:	Generation of Suburban Terrain Inflow Conditions for Large Eddy Simulations
Authors:	Li, Yi-Chao;Cheng, Chii-Ming;Fang, Fuh-Min;Chang, Chen-Hsin;Lo, Yuan-Lung
Contributors:	淡江大學風工程研究中心;淡江大學土木工程學系
Keywords:	COMPUTATION FLUID DYNAMIC;TURBULENCE BOUNDARY LAYER;LARGE EDDY SIMULATION
Date:	2013-12
Issue Date:	2013-12-02 18:36:02 (UTC+8)
Abstract:	To generate the suitable atmospheric boundary layer inlet for large eddy simulation, one of the most important techniques of computational wind engineering, the MDSRFG (modified discretizing and synthesizing random flow generation) was selected to numerically generate the inhomogeneous and anisotropic turbulence boundary layer in this paper. A weakly-compressible-flow method along with the large eddy simulation (LES) was utilized to reproduce the unsteady flow field. Parameters, such as mean wind speeds, turbulence intensities and turbulence integral scales from fully-developed turbulent boundary layer flow were provided by well-established wind tunnel tests. Furthermore, coherence between any two fluctuating wind speeds was taken into account for a more compact simulation of inflow. It was indicated that the method works well as a suburban turbulence boundary layer generator by comparing the characteristics of mean wind speed profiles, turbulence intensity profiles and power spectra at the centerline of several positions along longitudinal direction from wind tunnel tests.
Relation:	Proceedings of The 8th Asia-Pacific Conference on Wind Engineering (APCWE-VIII), p.1-8
Appears in Collections:	[土木工程學系暨研究所] 會議論文 [風工程研究中心] 會議論文

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