教師資料查詢 | 類別: 期刊論文 | 教師: 羅元隆 LO, YUAN-LUNG (瀏覽個人網頁)

標題:Simulation of turbulent flows around a prism in suburban terrain inflow based on random flow generation method simulation
學年104
學期1
出版(發表)日期2015/11/01
作品名稱Simulation of turbulent flows around a prism in suburban terrain inflow based on random flow generation method simulation
作品名稱(其他語言)
著者Yi-Chao Li; Chii-Ming Cheng; Yuan-Lung Lo; Fuh-Min Fang; De-qian Zheng
單位
出版者
著錄名稱、卷期、頁數Journal of Wind Engineering and Industrial Aerodynamics 146, pp.51–58
摘要In the study, the modified discretizing and synthesizing random flow generation (MDSRFG) was adopted to generate an anisotropic boundary layer inlet for large-eddy simulation. The mean velocity, turbulence intensity and turbulence length scale distributions at inlet, were defined according to the measurements at TKU wind tunnel. The von Kármán model was used as the target spectrum. Wind tunnel pressure measurements on a square prism model with aspect ratio of 3 was used for validation of numerical simulation. Results show that turbulence energy is well maintained from the inlet to the downstream. The relative differences between the measurement and predicted results are 3.4% (mean drag coefficient), 11% (fluctuating drag coefficient), 25.6% (fluctuating side force coefficient) and 4.7% (Strouhal number). The simulated mean and fluctuating pressure distributions showed good agreements with the experiments. The averaged differences between measurement and predicted results are 14.49% (mean pressure coefficient) and 13.74% (fluctuating pressure coefficient). This indicates that the adoption of a reasonable process based on the MDSRFG method is an effective tool to generate a spatially correlated atmospheric boundary layer flow field.
關鍵字Computational fluid dynamic;Atmospheric boundary layer;Large eddy simulation;Random flow generation
語言英文
ISSN1872-8197
期刊性質國外
收錄於SCI;EI;
產學合作
通訊作者Li, Y.C
審稿制度
國別荷蘭
公開徵稿
出版型式,電子版,紙本
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