A Numerical Simulation Method of Wind-farm Wakes Based on the Equivalent Roughness Model
With the expansion of wind farm scale and increasing turbine density,the wake effects of the entire wind farm have become more prominent and garnered significant attention.Accurately assessing the wake effects in a wind farm is crucial for its construction and development.However,there is currently a lack of wake calculation methods that balance computational accuracy and efficiency.In this study,we implemented a nested approach for the wind farm using the OpenFOAM platform,combining the wind farm equivalent roughness model and the Reynolds-averaged Navier-Stokes(RANS)method.This method was employed for numerical simulations of a large-scale wind farm.The results indicate that this approach significantly improves computational accuracy compared to commonly used wake models in engineering applications.Moreover,due to its simplicity in wind farm modeling,it requires fewer computational resources,making it a rapid wake calculation method suitable for large-scale wind farms.
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