浅海-低流速海域潮流能水平轴桨叶的设计

Design Trend of Shallow Sea and Low Velocity Area to the Blade of Horizontal Axis

桨叶是水平轴潮流能发电装置的关键部件,其性能直接关系到整个潮流能发电装置的能量捕获效率。而桨叶性能的好坏受到很多外界因素的干扰。像我国浅海地区,在退潮以后海水只有3~4 m深,很大程度上限制了桨叶的半径,使其不能发出预想的电量来。文中进行了浅海域低流速环境下桨叶的设计,来提高该环境下桨叶发电效率。首先,桨叶参数设计,要从翼型产生升力区域和桨叶半径两方面进行设计;然后,进行桨叶的三维模型设计和该模型的动力学分析,通过对比同浸没深度不同半径的桨叶做功来验证桨叶设计的合理性。搭建桨叶性能测试平台对两种桨叶进行实验比较,验证理论和设计的正确性。

Blade is the key component of the horizontal-axis-tidal-current-power-generation device. The power generation efficiency will not only directly affected by the performance of blade will,but also affected by extraneous factor. There are only three or four meters deep in our country shallow sea areas,which greatly limits the blade radius. So the blade cannot send out the anticipated power. This article designs blade for the area of shallow sea water and low speed water to improve the generation efficiency. The lift area and generate airfoil blade radius are designed,3D model of the blade is buih for theoretical model analysis. By comparing the work of blade with different radius and same immersion depth,the rationality of the blade design is verified. Two kinds of blades are compared by blade performance test platform to verily the con＇ectness of the theory and design.