Study on the Wake Characteristics of the Loess Plateau Terrain Based on Wind Tunnel Experiment

Yulong Ma, Shoutu Li (), Deshun Li, Zhiteng Gao, Xingduo Guo and Qingdong Ma
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Yulong Ma: School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Shoutu Li: School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Deshun Li: School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Zhiteng Gao: Institute of Energy Science, College of Engineering, Shantou University, Shantou 515063, China
Xingduo Guo: School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Qingdong Ma: School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China

Energies, 2025, vol. 18, issue 4, 1-16

Abstract: The northwest region of China’s loess plateau is an important area for wind power development. However, the unclear understanding of the evolution mechanism of the near-ground atmospheric boundary layer (ABL), which is influenced by its unique geomorphological features, has compromised the safety and stability of wind turbine operations. To address this challenge, wind tunnel experiments were conducted to investigate the mean and turbulent characteristics of wake flow generated by mountains in the loess plateau. The results indicate that the terrain significantly affects both the average velocity deficit and turbulence intensity distribution within the wake. Specifically, topographic features dominate turbulent energy transfer and modulate coherent structures in the inertial subrange. Additionally, the scale of these features enhances turbulence energy input at corresponding scales in the fluctuating wind speed spectrum, leading to a non-decaying energy interval within the inertial subregion.

Keywords: loess plateau; wind farm; atmospheric boundary layer; wind tunnel experiment; turbulence characteristics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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