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Abstract: Large eddy simulations generally are used to predict 3D wind field characteristics in complex mountainous areas. Certain 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 predictions. In 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 experiment. Various sizes of computational domains and turbulent incoming wind velocities were used in large eddy simulations. The 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 area. Expanding the length of the wake region of the computational domain has negligible effects on the wind fields. Turbulence 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.

不同边界条件下复杂山区三维风场的大涡模拟研究

[1]AIJ (Architectural Institute of Japan), 2004. Recommendations for Loads on Buildings/Commentary, AIJ-2004. AIJ, Tokyo, Japan.

[2]AS/NZS (Australian/New Zealand Standard), 2021. Structural Design Actions. Part 2: Wind Actions, AS/NZS 1170.2:2021. Australian/New Zealand Standard.

[3]ASCE (American Society of Civil Engineers), 2022. Minimum Design Loads for Buildings and Other Structures, ASCE 7-22. ASCE, Reston, USA.

[4]CaoSY, WangT, GeYJ, et al., 2012. Numerical study on turbulent boundary layers over two-dimensional hills—effects of surface roughness and slope. Journal of Wind Engineering and Industrial Aerodynamics, 104-106:‍342-349.

[5]CEN (European Committee for Standardization), 2005. Eurocode 1: Actions on Structures—Part 1-4: General Actions—Wind Actions, BS EN 1991-1-4:2005. British Standard.

[6]ChaudhariA, HellstenA, HämäläinenJ, 2016. Full-scale experimental validation of large-eddy simulation of wind flows over complex terrain: the Bolund hill. Advances in Meteorology, 2016:9232759.

[7]CheynetE, 2020. Wind Field Simulation (Text-Based Input). Zenodo.

[8]FlayRGJ, KingAB, RevellM, et al., 2019. Wind speed measurements and predictions over Belmont hill, Wellington, New Zealand. Journal of Wind Engineering and Industrial Aerodynamics, 195:104018.

[9]HanY, ShenL, XuGJ, et al., 2018. Multiscale simulation of wind field on a long-span bridge site in mountainous area. Journal of Wind Engineering and Industrial Aerodynamics, 177:260-274.

[10]HuP, HanY, XuGJ, et al., 2018. Numerical simulation of wind fields at the bridge site in mountain-gorge terrain considering an updated curved boundary transition section. Journal of Aerospace Engineering, 31(3):04018008.

[11]HuWC, YangQS, ChenHP, et al., 2021. Wind field characteristics over hilly and complex terrain in turbulent boundary layers. Energy, 224:120070.

[12]IshiharaT, HibiK, OikawaS, 1999. A wind tunnel study of turbulent flow over a three-dimensional steep hill. Journal of Wind Engineering and Industrial Aerodynamics, 83(1-3):95-107.

[13]IshiharaT, QianGW, QiYH, 2020. Numerical study of turbulent flow fields in urban areas using modified k–ε model and large eddy simulation. Journal of Wind Engineering and Industrial Aerodynamics, 206:104333.

[14]JiangFY, ZhangMJ, LiYL, et al., 2021. Field measurement study of wind characteristics in mountain terrain: focusing on sudden intense winds. Journal of Wind Engineering and Industrial Aerodynamics, 218:104781.

[15]JingHM, LiaoHL, MaCM, et al., 2019. Influence of elevated water levels on wind field characteristics at a bridge site. Advances in Structural Engineering, 22(7):1783-1795.

[16]LiuZQ, IshiharaT, HeXH, et al., 2016. LES study on the turbulent flow fields over complex terrain covered by vegetation canopy. Journal of Wind Engineering and Industrial Aerodynamics, 155:60-73.

[17]LundTS, WuXH, SquiresKD, 1998. Generation of turbulent inflow data for spatially-developing boundary layer simulations. Journal of Computational Physics, 140(2):‍233-258.

[18]MaYL, LiuHP, 2017. Large-eddy simulations of atmospheric flows over complex terrain using the immersed-boundary method in the weather research and forecasting model. Boundary-Layer Meteorology, 165(3):421-445.

[19]MOT (Ministry of Transport of the People’s Republic of China), 2018. Wind-Resistant Design Specification for Highway Bridges, JTG/T 3360-01-2018. National Standards of the People’s Republic of China(in Chinese).

[20]NRCC (National Research Council of Canada), 2020. National Building Code User’s Guide‍–‍Structural Commentaries (Part 4), NRCC2020. Canadian Commission on Building and Fire Codes, NRCC, Ottawa, Canada.

[21]PiroozAAS, FlayRGJ, TurnerR, 2021. New Zealand design wind speeds, directional and lee-zone multipliers proposed for AS/NZS 1170.2:2021. Journal of Wind Engineering and Industrial Aerodynamics, 208:104412.

[22]RenHH, LaimaSJ, ChenWL, et al., 2018. Numerical simulation and prediction of spatial wind field under complex terrain. Journal of Wind Engineering and Industrial Aerodynamics, 180:49-65.

[23]TangHJ, LiYL, ShumKM, et al., 2020. Non-uniform wind characteristics in mountainous areas and effects on flutter performance of a long-span suspension bridge. Journal of Wind Engineering and Industrial Aerodynamics, 201:104177.

[24]TangXY, ZhaoSM, FanB, et al., 2019. Micro-scale wind resource assessment in complex terrain based on CFD coupled measurement from multiple masts. Applied Energy, 238:806-815.

[25]UchidaT, OhyaY, 2003. Large-eddy simulation of turbulent airflow over complex terrain. Journal of Wind Engineering and Industrial Aerodynamics, 91(1-2):219-229.

[26]WangT, CaoSY, GeYJ, 2014. Effects of inflow turbulence and slope on turbulent boundary layer over two-dimensional hills. Wind and Structures, 19(2):219-232.

[27]XingLF, ZhangMJ, LiYL, et al., 2021. Large eddy simulation of the fluctuating wind environment at a bridge site in the mountainous area. Advances in Bridge Engineering, 2(1):26.

[28]YanL, GuoZS, ZhuLD, et al., 2016. Wind tunnel study of wind structure at a mountainous bridge location. Wind and Structures, 23(3):191-209.

[29]YangQS, ZhouT, YanBW, et al., 2020. LES study of turbulent flow fields over hilly terrains—comparisons of inflow turbulence generation methods and SGS models. Journal of Wind Engineering and Industrial Aerodynamics, 204:104230.

[30]YangQS, ZhouT, YanBW, et al., 2021. LES study of topographical effects of simplified 3D hills with different slopes on ABL flows considering terrain exposure conditions. Journal of Wind Engineering and Industrial Aerodynamics, 210:104513.

[31]ZhangMJ, LiYL, WangB, et al., 2018. Numerical simulation of wind characteristics at bridge site considering thermal effects. Advances in Structural Engineering, 21(9):‍‍1313-1326.

[32]ZhangMJ, JiangFY, LiYL, et al., 2022. Multi-point field measurement study of wind characteristics in mountain terrain: focusing on periodic thermally-developed winds. Journal of Wind Engineering and Industrial Aerodynamics, 228:105102.

[33]ZhouT, YangQS, YanBW, et al., 2022a. Detached eddy simulation of turbulent flow fields over steep hilly terrain. Journal of Wind Engineering and Industrial Aerodynamics, 221:104906.

[34]ZhouT, YanBW, YangQS, et al., 2022b. POD analysis of spatiotemporal characteristics of wake turbulence over hilly terrain and their relationship to hill slope, hill shape and inflow turbulence. Journal of Wind Engineering and Industrial Aerodynamics, 224:104986.