Implications of steep hilly terrain for modeling wind-turbine wakes

被引:17
作者
Wang, Ding [1 ]
Feng, Dachuan [1 ,2 ]
Peng, Huaiwu [4 ]
Mao, Feng [3 ]
Doranehgard, Mohammad Hossein [2 ]
Gupta, Vikrant [1 ,5 ]
Li, Larry K. B. [2 ,6 ]
Wan, Minping [1 ,5 ,7 ]
机构
[1] Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Guangdong Prov Key Lab Turbulence Res & Applicat, Shenzhen 518055, Peoples R China
[2] Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Clear Water Bay, Hong Kong, Peoples R China
[3] Tenfong Technol Co Ltd, Shenzhen 518000, Peoples R China
[4] Northwest Survey & Design Res Inst, Xian 710065, Peoples R China
[5] Southern Univ Sci & Technol, Guangdong Hong Kong Macao Joint Lab Data Driven Fl, Shenzhen 518055, Peoples R China
[6] Hong Kong Univ Sci & Technol, Guangdong Hong Kong Macao Joint Lab Data Driven Fl, Clear Water Bay Hong Kong, Hong Kong, Peoples R China
[7] Southern Univ Sci & Technol, Jiaxing Res Inst, Jiaxing 314031, Peoples R China
基金
中国国家自然科学基金;
关键词
Renewable energy; Wind energy; Wind turbine; Wake modeling; Hilly terrain; LARGE-EDDY SIMULATIONS; SUBGRID-SCALE MODELS; TURBULENT-FLOW; ATMOSPHERIC STABILITY; COMPLEX TERRAIN; TUNNEL; ROUGHNESS; PERFORMANCE;
D O I
10.1016/j.jclepro.2023.136614
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Wind energy is crucial to the transition to a carbon-free world. However, new wind farms are increasingly sited on complex terrain, whose influence on turbine performance is still not well understood. Here large-eddy simulations are performed on the flow around a wind turbine sited on three different terrain types: a flat ground, a 2-D hill, and a 3-D hill. We find that hilly terrain can increase the power generated via the speed-up effect, but that it can also increase the wake deficit and deflect the wake center, potentially affecting any turbines downstream. We interpret this deflection as being caused by the topography-induced vertical velocity component, which we model with a passive tracer method. By combining this passive tracer method with engineering-focused wake models, we obtain improved predictions of the velocity deficit and wake deflection. Such a hybrid strategy is fast and accurate, facilitating the design of wind farms sited on steep hilly terrain, which often experience flow separation at the backslope.
引用
收藏
页数:10
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