THE EFFECT OF INFLOW TURBULENCE ON THE PERFORMANCE OF SMALL-SCALE WIND TURBINE | ||
| Journal of Al-Azhar University Engineering Sector | ||
| Volume 20, Issue 74, January 2025, Pages 255-257 PDF (2.17 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/auej.2025.245905.1457 | ||
| Authors | ||
| Mohamed Fakhr Eldin Elmeselhi* 1; Mohamed Ahmed Abd ELrahman1; Mohamed Elsayed Emam2; Mohamed Moawad2 | ||
| 1Department of Mechanical Engineering, Shoubra Faculty of Engineering, Benha University,11629, Egypt | ||
| 2Combustion and Energy Technology Lab, Mechanical Engineering Department, Shoubra Faculty of Engineering, Benha University, Egypt | ||
| Abstract | ||
| The current study explores the impact of inflow turbulence on the operation of a small-scale wind turbine With regard to coefficient of power and wake recovery location on various terrains representing different topographical locations. A comprehensive 3D model is developed and validated to simulate the small-scale horizontal axis wind turbine's aerodynamic performance operating in an atmospheric boundary layer caused by surfaces with various aerodynamic roughness lengths. The k-ω SST turbulence model is utilized to solve transient Reynolds averaged Navier-Stokes equations, revealing critical wake characteristics as air velocity and turbulence intensity recovery. Air velocity behind wind turbines is accelerated by increasing input turbulence, per the study., with smooth surfaces recovering after over twenty times the turbine diameter. Changing tip speed ratio has minimal impact on the coefficient of power, except for a marginal 6 percent improvement at the 3 and 7.1 ends. By evaluating the viability of putting turbines behind the front row for the best coefficient of power and lowest operating and maintenance costs, the research seeks to improve wind farm efficiency. | ||
| Keywords | ||
| Free stream turbulence; wind farm; wind turbine Wakes; Atmospheric boundary layer; CFD simulations | ||
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