【摘要】 垂直轴水轮机转子增加增速装置能够有效提高能源利用率,但相关导流涵道安装角度对垂直轴水轮机水力学性能影响的研究较少。文章针对一种导流涵道装置,采用CFD数值模拟研究方法,研究导流涵道安装角度不同时,对垂直轴水轮机的输出功率和能源利用率的影响,以及垂直轴水轮机叶片和导流涵道的受力情况。研究结果表明:当导流涵道安装角α为0°时,水轮机的能源利用率最大,最大可达0.658,导流涵道受力情况更好;当安装角α为0～10°时,随着安装角度的增大,水轮机的能源利用率逐渐减小,最大减少13.6%,水轮机叶片受到的平均侧力会增加,平均推力和平均扭矩会减小,下导流涵道受力和力矩增大。更多还原

【Abstract】 It is found that the rotor increasing device of the vertical axis tidal turbine can effectively improve the capacitation efficiency, but there are few studies on the influence of the installation on the influence of the installation angle of duct on the hydrodynamic performance of the vertical axis tidal turbine. In this paper, CFD numerical simulation method is used to study the influence of different installation angles of duct on the output power and energy efficiency of the the vertical axis tidal turbine, as well as the stress on the blades and duct. The results show that the maximum capacitated efficiency of the turbine is 0.658 when α=0 °, and the hydrodynamic performance of duct is better; When α=0～10 °, with the increase of installation angle, the turbine energy efficiency decreases,the maximum reduction value is 13.6%. The average side force of the turbine will increase, the average thrust and average torque will decrease, and the force and torque of the lower duct will increase.更多还原