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建立非简化的全自由尾涡模型,以精确计算尾涡对风力机气动特性的影响;应用经典的升力线理论建立叶片气动模型,以准确计及粘性效应;利用预估-校正-松弛策略以保证尾迹求解的稳定性。借助并行处理技术和快速多极子方法加速诱导速度计算,极大降低了全自由尾涡模型的计算成本消耗。最后以NREL实验风轮为算例,并与CFD计算结果进行对比,验证了该方法的有效性。
The non-simplified free-eddy wake model is established to accurately calculate the effect of wake-vortex on the aerodynamic performance of the wind turbine. The classical aerodynamic model of the blade is used to establish the aerodynamic model of the blade to accurately account for the viscous effect. By using the estimation-correction-relaxation strategy Guarantee the stability of Wake solution. Accelerating the calculation of the speed of induction by means of parallel processing and fast multipole methods greatly reduces the computational cost of the full-free wake vortex model. Finally, taking the NREL experimental wind wheel as an example and comparing with the CFD calculation, the validity of the method is verified.