Implications of steep hilly terrain for modeling wind-turbine wakes

Wang，Ding1,3; Feng，Dachuan1,2; Peng，Huaiwu4; Mao，Feng3; Doranehgard，Mohammad Hossein2; Gupta，Vikrant1,5; Li，Larry K.B.2,6; Wan，Minping1,5,7

2023-04-20

10.1016/j.jclepro.2023.136614

Journal of Cleaner Production   Impact Factor & Quartile

0959-6526

1879-1786

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.

Hilly terrain Renewable energy Wake modeling Wind energy Wind turbine

SCI

English

First

National Natural Science Foundation of China["12002147","12050410247"] ; Shenzhen Science and Technology Program, China[KQTD20180411143441009] ; Department of Science and Technology of Guangdong Province, China[2020B1212030001] ; Research Grants Council of Hong Kong[16210419]

Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology

Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences

WOS:000956487900001

ELSEVIER SCI LTD

2-s2.0-85149275118

Scopus

1.Southern University of Science and Technology,Department of Mechanics and Aerospace Engineering,Guangdong Provincial Key Laboratory of Turbulence Research and Applications,Shenzhen,518055,China
2.Hong Kong University of Science and Technology,Department of Mechanical and Aerospace Engineering,Clear Water Bay,Hong Kong
3.Tenfong Technology Co.,Ltd.,Shenzhen,518000,China
4.Northwest Survey and Design Research Institute,Xi-An,710065,China
5.Southern University of Science and Technology,Guangdong–Hong Kong–Macao Joint Laboratory for Data-Driven Fluid Mechanics and Engineering Applications,Shenzhen,518055,China
6.Hong Kong University of Science and Technology,Guangdong–Hong Kong–Macao Joint Laboratory for Data-Driven Fluid Mechanics and Engineering Applications,Clear Water Bay,Hong Kong
7.Southern University of Science and Technology,Jiaxing Research Institute,Jiaxing,314031,China

Wang，Ding,Feng，Dachuan,Peng，Huaiwu,et al. Implications of steep hilly terrain for modeling wind-turbine wakes[J]. Journal of Cleaner Production,2023,398.

Wang，Ding.,Feng，Dachuan.,Peng，Huaiwu.,Mao，Feng.,Doranehgard，Mohammad Hossein.,...&Wan，Minping.(2023).Implications of steep hilly terrain for modeling wind-turbine wakes.Journal of Cleaner Production,398.

Wang，Ding,et al."Implications of steep hilly terrain for modeling wind-turbine wakes".Journal of Cleaner Production 398(2023).