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基于动量叶素理论,推导同半径对旋风力机功率与前、后级轴向速度诱导因子的关系,结果与经典模型吻合;将单级风力机Wilson设计法发展为考虑级间干扰的对旋风机设计法,实现以环形微元盘面功率系数最大为目标,前、后级轴向和环向诱导因子为变量的优化设计,并完成2 k W单级和对旋风力机设计实例。最后采用CFD方法验证对旋风力机实验结果和设计结果,数值计算表明,设计工况下,对旋风机的风能利用率(46.32%)高于单级风力机(41.44%),并分析了数值预测的风能利用率与理论最佳值(64.00%)和(59.26%)的差异。
Based on the momentum valence element theory, the relationship between the power of the same radius wind turbine and the inducing factors of axial velocity before and after the wind turbine is deduced. The results are in good agreement with those of the classical model. The single-stage wind turbine Wilson design method is developed to consider the inter- Machine design method to realize the optimal design of the variables with the maximum power coefficient of the annular micro-disk surface, the axial and circumferential inducing factors of the front and rear stages, and the design examples of 2 k W single-stage and counter-rotating wind turbines are completed. Finally, the CFD method is used to verify the experimental results and design results of the gyroturbine. The numerical results show that the wind turbine utilization efficiency (46.32%) is higher than that of the single-stage wind turbine (41.44%) under the design conditions, The difference between predicted wind energy utilization and the theoretical best value (64.00%) and (59.26%).