【摘要】 文章通过水槽实验研究了直叶片在静态以及动态效应下的水动力特性。研究结果表明:在静态分析情况下,在来流加、减速过程中,直叶片的升、阻力系数的变化趋势相同;在动态分析情况下,当来流速度一定,电机转速不同时,直叶片的升、阻力系数在不同转速下的变化趋势基本相同;当电机转速一定,来流速度不同时,来流速度对叶片水动力性能的影响具有一致性;与静态分析相比,翼型的动态失速角大于静态失速角,失速延迟现象较为明显。实验结果可为直叶片动态失速现象的研究提供一定的参考价值。更多还原

【Abstract】 In this paper, the hydrodynamic characteristics of the airfoil blade in the static and dynamic state are been studied by a flume experiment. The results show that in the static analysis,the lift and drag coefficient of the straight airfoil blade have the same trend in the process of inflow acceleration and deceleration. In the case of dynamic analysis, when the incoming flow velocity is constant and the motor speed is different, the variation trend of the lift and drag coefficient of the straight blade at different speeds is basically the same. When the motor speed is fixed and the incoming flow velocity is different, the influence of the incoming flow velocity on the hydrodynamic performance of the blade is consistent. Compared with static analysis, the dynamic stall angle of airfoil is larger than that of static stall angle, and the stall delay phenomenon is more obvious. The experimental results can provide some reference value for the study of dynamic stall of straight airfoil blades.更多还原