【摘要】 为了提高直叶片竖轴潮流水轮机的水动力性能,利用势能工作的水轮机的导流叶柵的原理,在潮流水轮机流场周围加装导流叶柵,通过叶柵的导流作用改变经过潮流水轮机流场的水流方向、大小等,从而影响潮流水轮机的水动力性能。根据这一原理,利用Fluent流体力学计算软件数值模拟了导叶对水轮机的水动力性能影响。结果表明,导叶安装角、栅距、导叶距水轮机轨迹圆的距离等方面在低速比情况下会提高潮流水轮机的能量利用率。更多还原

【Abstract】 In order to improve the hydrodynamic performance of straight-bladed vertical axis tidal turbine,the guide vanes principle of potential energy turbine is applied to install the guide vanes around the flow fields of tidal turbine.The guide vanes can inflect the direction and magnitude of flow fields of tidal turbine and then affect the hydrodynamic performance of tidal turbine.Calculations of the hydrodynamic performance of tidal turbine with guide vanes are done with Fluent.The calculated results show that the aspects of setting angle of guide vanes,distance between guide vanes,distance from guide vanes to turbine can enhance the power coefficient of tidal turbine at low tip speed ratio.更多还原