摘要
90°扭角螺旋形Savonius风轮模拟结果与试验结果的对比,证明κ-ε模型具有较高精度。采用该模型对螺旋形Savonius风轮进行数值计算,深析螺旋角度θ、隔板数N、螺距P3个结构参数对风能利用系数的影响规律,并与传统直叶片Savonius风轮进行静力矩对比。结果表明:θ=180°,N=6和P=6.0的风轮在叶尖速比为0.75时达0.21;螺旋形Savonius风轮静力矩系数均大于0,比传统直叶片风轮具有更良好的启动性能。
Comparison between modeling results of 90° helix Savonius rotor and test results proved that the k-ε turbulent model has perfect adjustability to the calculation of Savonius rotor. Therefore, k-ε model is applied to research a helix Savonius rotor, and to analyze deeply the roles of effect on coefficient of rotor power from twist angle （0）, number of inner plates within buckets （N） and pitch （P）, then compare the static torque between the helical Savonius rotor and conventional one. The results shown that the maximum coefficient of rotor power reaches 0.21 when rotor is with 0 = 180°, N = 6 and P = 6.0; the static torque of helical Savonius rotor is positive in all rotation angle zone, helical rotor has a better starting performance than conventional one.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2010年第11期1480-1484,共5页
Acta Energiae Solaris Sinica
基金
中国博士后科学基金(20090451162)
河海大学校自然科学基金(2008426711)
关键词
螺旋形S风轮
垂直轴风力机
性能优化
风能转化系数
静力矩系数
helix S-shaped wind rotor
vertical axis wind turbine
performance improvement
power coefficient
static torque coefficient
