CAJ | 학술논문

将风力机转子时间步进自由尾迹分析模型用于风力机空气动力学分析 ,得到每个桨叶微段上的三维翼型升阻力数据 ;然后将所得的三维升阻系数与BEM理论结合起来 ,计算风力机转子的气动性能 ,以计入三维旋转效应的影响.将计算结果与实验数据进行比较 ,验证了该方法的有效性 ,为后续进一步研究失速延迟、提高风力机转子气动性能预测的准确性提供理论支撑.
장풍력궤전자시간보진자유미적분석모형용우풍력궤공기동역학분석 ,득도매개장협미단상적삼유익형승조력수거 ;연후장소득적삼유승조계수여BEM이론결합기래 ,계산풍력궤전자적기동성능 ,이계입삼유선전효응적영향.장계산결과여실험수거진행비교 ,험증료해방법적유효성 ,위후속진일보연구실속연지、제고풍력궤전자기동성능예측적준학성제공이론지탱.
In this article ,we consider the NREL Phase VI rotor where airfoil data are extracted from Free Vortex Wake (FVW) re-sults .The azimuthally averaged velocity is used as the sectional velocity to define the angle of attack and the coefficients of lift and drag are determined by the forces on the blades .The extracted airfoil data are put into a Blade Element Momentum (BEM )code with-out further corrections ,and the calculated data are compared to both computations using BEM with Shen 's tip loss correction model and experimental data .The comparisons show that the recalculated forces by using airfoil data extracted from FVM have good agree-ments with the experiment .