矩形潮流能水轮机性能的实验研究

Experimental study on rectangular tidal current turbines

为了研究矩形潮流能水轮机的性能,设计了矩形潮流能水轮机及其实验模型装置,构建了实验平台,选配了实验仪器和设备,进行矩形潮流能水轮机模型的往复流及变安装摆角实验、密实度影响实验和不同流速下的功率输出实验.实验结果表明:矩形水轮机具有良好的双向来流单向旋转特性,在来流速度大小恒定的情况下,正向来流和反向来流具有相同的能量捕获能力;当安装摆角ψ=±15°时,水轮机的能量捕获能力优于ψ=±5°时的;不同速比区间内,随密实度增加,水轮机的获能能力也相应增加;流速增加,输出功率峰值增大,峰值点右移.

To study the performance of rectangular tidal current turbines, a rectangular tidal current turbine and its experimental model were designed. An experiment platform was established and the experiment instrument and devices were selected. Then, some experiments were conducted, including the model of reciprocating flow experiment, the changing installation angle experiments, the impact of compactness experiment and the output power in different flow velocity experiment. The experimental results show that the rectangular tidal current turbine has good two-way flow of unidirectional rotation characteristic and the forward and reverse flows with the same energy capture capacity in the case of a constant flow velocity; when installation angle ψ=±15°, the tidal turbine′s ability of energy-capture is superior to the one when the installation angle ψ=±5°; the tidal turbine′s ability of energy-capture increases as the compactness increases within different speed ratio intervals; the peak value of output power increases with the increase of the flow velocity and the peak point moves right.