Large eddy simulation study of 3D wind field in a complex mountainous area under different boundary conditions
作者机构：School of Civil EngineeringCentral South UniversityChangsha410075China National Engineering Research Center for High-speed Railway ConstructionChangsha410075China Hunan Provincial Key Laboratory for Disaster Prevention and Mitigation of Rail Transit Engineering StructuresChangsha410075China
出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)
年 卷 期：2024年第25卷第7期
页 面：541-556页
核心收录：
学科分类：08[工学] 0807[工学-动力工程及工程热物理]
基 金：supported by the National Natural Science Foundation of China(Nos.51925808 and 52178516) the Natural Science Foundation of Hunan Province(Nos.2020JJ5745 and 2023JJ20073),China
主 题：Large eddy simulation(LES) Spectral representation method Recycling method High mountainous canyon Wind characteristics Atmospheric boundary layer Computational domain
摘 要：Large eddy simulations generally are used to predict 3D wind field characteristics in complex mountainous *** simulation boundary conditions,such as the height and length of the computational domain or the characteristics of inflow turbulence,can significantly impact the quality of *** this study,we examined these boundary conditions within the context of the mountainous terrain around a long-span cable-stayed bridge using a wind tunnel *** sizes of computational domains and turbulent incoming wind velocities were used in large eddy *** results show that when the height of the computational domain is five times greater than the height of the terrain model,there is minimal influence from the top wall on the wind field characteristics in this complex mountainous *** the length of the wake region of the computational domain has negligible effects on the wind *** in the inlet boundary reduces the length of the wake region on a leeward hill with a low slope,but has less impact on the mean wind velocity of steep hills.
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