小型水平轴潮流能水轮机叶片的设计及其性能的分析  

Design and Performance Analysis of Small Horizontal Axis Tidal Current Energy Turbine's Blade

作　　者：田美灵[1] 刘雪峰[2] 王晋宝[1] 唐志波[2] 郭欣[2] 

机构地区：[1]浙江海洋学院海运与港航建筑工程学院,浙江舟山316022 [2]浙江海洋学院船舶与海洋工程学院,浙江舟山316022

出　　处：《机械工程师》2014年第12期140-145,共6页Mechanical Engineer

基　　金：浙江海洋学院校级重大项目(21045034112)

摘　　要：潮流能作为一种清洁无污染而且蕴藏丰富的可再生新能源,对其合理开发利用可以有效缓减能源短缺的问题。文中选用N A C A 644X X系列翼型,以得到较高捕能系数的水轮机为目标,基于叶素-动量(B EM)理论,给出了叶轮叶片设计的步骤,分别以翼型前缘和翼型最大厚度为基准设计出两种30 W的小型水平轴潮流能水轮机叶片;然后运用叶素理论和动量理论对叶轮捕能系数进行了理论计算,即运用C FD软件A N SY S C FX对设计出的叶轮模型捕能系数进行了数值模拟计算并与理论值进行了对比。结果表明以翼型前缘为基准设计出的叶片捕能效果更好,同时验证了叶素理论与动量理论的等效性以及运用叶素-动量理论进行叶片设计的有效性。Tidal current energy is a cle an,pollution-free,rich and renewable energy,which is available for reliving of energy shortage. In this paper,a 30 W turbine with high power coefficient is designed based on the BEM theory. The NACA644 XX series airfoils are chosen and two kinds of turbine blades are designed on the base of airfoil leading edge and airfoil maximum thickness. Then the power coefficient is calculated by using blade element theory,momentum theory. The power coefficient is also got through numerical simulation by CFD software ANSYS CFX and compared with theoretical value. The results show that the blade designed based on the airfoil leading edge has better energy catching efficacy. It can be concluded the blade element theory and momentum theory are equivalent and the availability of blade-designing basing on the BEM theory is also verified.

关 键 词：小型水平轴潮流能水轮机 叶素-动量(B EM)理论 叶片设计 捕能系数 C FD 

分 类 号：TK730[交通运输工程—轮机工程]