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为更深入地探讨振荡水柱式波能发电装置的原理,对用于波力发电装置二次能量转换的威尔斯式透平进行了三维全流道模拟计算。针对对称翼型叶片和非对称翼型叶片的威尔斯式透平,分别考察了其在不同叶片安装角下的效率和出力随流量系数的变化趋势,得出了不同叶片安装角时威尔斯式透平运行的最佳参数。在相同工况下,对比分析了不同翼型叶片威尔斯式透平的效率、出力、输入系数及扭矩系数随流量系数的变化,并比较了叶片表面的压力分布情况。结果表明,随着叶片安装角增大,装置最高效率值增大,且在安装角大于9°后变化缓慢,而装置最大出力却随着安装角的增大而减小;采用非对称翼型叶片时,装置的出力、输入系数、扭矩系数均大于相同工况下对称翼型叶片装置。
In order to further explore the principle of oscillating water column wave power generator, three-dimensional full-channel simulation was performed on Wells-type turbine used for secondary energy conversion of wave power plant. For the Wells-type turbine with symmetrical airfoil and asymmetric airfoil, the change trend of efficiency and output with the flow coefficient under different blade mounting angles were investigated respectively. At different mounting angles, The best parameters of the Stasi turbine operation. Under the same operating conditions, the efficiency, output, input coefficient and torque coefficient of the Weir turbine with different airfoil blades were compared and analyzed. The pressure distribution on the blade surface was compared. The results show that with the increase of the blade installation angle, the maximum efficiency of the device increases, and the change slowly after the installation angle is greater than 9 °, while the maximum output of the device decreases with the increase of the installation angle. Blade, the device output, input coefficient, torque coefficient are greater than the same conditions under the symmetrical airfoil blade device.