Fast Simulations of Complex Wake Flows around Wind Farm
The simulations of wind farm wake flow are performed based on self-developed software WinFm-SJTU.The Park wake model and energy conservation superposition model are used.Compared to results simulated by CFD method,power of three tandem wind turbines,as well as power of first and second wind turbines is well predicted by WinFm-SJTU,whereas power of third turbine under smaller spacing shows a discrepancy.Therefore,for simulation of wind farm with 35 wind turbines,the energy conservation superposition model is modified to account for faster velocity recovery induced by stronger turbulence intensity in wake superposition region.The wake loss of each wind turbine in a column predicted by WinFm-SJTU,as well as power of various columns in windfarm show a good agreement with those of CFD method,and the difference of total power of wind farm is only 1.02％.It is demonstrated that WinFm-SJTU can quickly and accurately predict the wake flow in wind farm.
WinFm-SJTULarge wind farmFast wake predictionWake effect
万方数据
维普
