水平轴潮流水轮机水力性能的数值模拟研究  

Numerical Simulation Investigation on Hydraulic Performance of the Horizontal-Axis Tidal Current Turbine

作　　者：肖惠民[1,2] 

机构地区：[1]武汉大学动力工程系,湖北武汉430072 [2]水力机械过渡过程教育部重点实验室(武汉大学),湖北武汉430072

出　　处：《水电与新能源》2015年第4期1-4,共4页Hydropower and New Energy

摘　　要：采用数值模拟方法对一种带增速管的水平轴潮流水轮机的流量特性和转速特性进行了研究,并分析了增速管长径比、面积比对该水轮机水力性能的影响。计算结果表明:该潮流水轮机能量转换效率较高,同时自启动性能好,但对潮流流速变化较敏感;增速管可显著提高水轮机的水力性能,特别是输出功率;对于一定结构形式的潮流水轮机,增速管具有最佳的长径比。Three-dimensional numerical simulations are carried out to investigate the hydraulic characteristics of the hori -zontal-axis tidal current turbine with speed-up tube.Effects of the dimension parameters of the speed-up tube, such as the length-diameter ratio and the area ratio, on the turbine＇s performance are also studied.Results show that the horizon-tal-axis tidal current turbine is of high energy utilization rate and great self-starting performance, while it is sensitive to the variation of the tidal current velocity.The speed-up tube can significantly improve the hydraulic performance, espe-cially the output power, of the tidal current turbine.The optimum length-diameter ratio of the speed-up tube is also de-termined.

关 键 词：潮流水轮机 水力性能 增速管 数值模拟 

分 类 号：P743.3[天文地球—海洋科学] TK73[交通运输工程—轮机工程]