【摘 要】
：
采用CFD软件对麦克马斯特大学垂直轴风力机进行数值模拟,结果表明:在不同叶尖速比下,风力机计算功率与风洞试验数据吻合良好;风轮中上行叶片尾流影响下行叶片气动特性,与单根
【机 构】
：
河海大学力学与材料学院,水资源高效利用与工程安全国家工程研究中心,
论文部分内容阅读
采用CFD软件对麦克马斯特大学垂直轴风力机进行数值模拟,结果表明:在不同叶尖速比下,风力机计算功率与风洞试验数据吻合良好;风轮中上行叶片尾流影响下行叶片气动特性,与单根叶片风力机模型相比,叶片扭矩峰值降低,峰值发生时间延迟;旋转叶片与平流流场中叶片相比,扭矩峰值有显著提升;叶片的附加质量效应有助于风力机降低支撑杆的设计强度,但增大了叶片与支撑杆的作用力;具有弯度翼型的风力机功率输出峰值相对于原始风力机功率输出高3.7%,且顺风向推力也低于原始风力机。
The numerical simulation of McMaster University vertical axis wind turbine using CFD software shows that at different tip speeds, the calculated wind power is in good agreement with the wind tunnel test data. The upwind blade wake influences the descending blade Compared with single-blade wind turbine model, the peak value of torque and the peak time of blade torque are delayed. Compared with the blade in the advection flow field, the peak value of torque is significantly increased. The additional mass effect of the blade contributes to the wind turbine Reduce the design strength of the support bar but increase the force of the blade and the support bar; the peak of the power output of the wind turbine with curved airfoil is 3.7% higher than that of the original wind turbine and the downwind thrust is also lower than that of the original wind turbine .
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