翼型前部修型的垂直轴风力机安装角敏感性研究  

Study on sensitivity of a VAWT by modification of airfoil to different installation angles

作　　者：陈超[1] 谭永志[1] 温学兵[2] 申振华[1] 王建明[1] 

机构地区：[1]沈阳航空航天大学辽宁省航空推进系统先进测试技术重点实验室,沈阳110136 [2]沈阳师范大学学报编辑部,沈阳110136

出　　处：《沈阳航空航天大学学报》2014年第6期12-18,共7页Journal of Shenyang Aerospace University

基　　金：辽宁省自然科学基金(项目编号:20102177)

摘　　要：在NACA0022翼型的垂直轴风力原型机的基础上,把翼型最大厚度前部修型为3∶2长短轴比的椭圆形;早先文献发现此种修型方式能在0度安装角时有效提升风力机的气动性能。进一步研究修型后的风力机对不同安装角的敏感性及其与对应原型机的气动性能对比情况。利用Fluent软件,采用k-ωSST湍流模型和SIMPLE算法,运用滑移网格技术,研究不同安装角下原型与修型后的风力机风能利用系数。计算结果表明,作3∶2翼型修型的风力机的气动性能较原型风力机对叶片的安装角更不敏感,高性能工作范围更宽,此种修型方式具有明显的工程应用价值。On a vertical axis wind turbine（VAWT） equipped with NACA0022 airfoil profile, the front maximum thickness of airfoil profile was modified into an oval, whose ratio between semimajor axis and semiminor axis is 3： 2. It has been taken as a reference in the previous literature that the aerodynam- ic performance of VAWT could be promoted by that modification at the installation angle of 0~. Here- in, a further investigation on sensitivity of the modified VAWT to diverse installation angles and the contrast between its aerodynamic performance and that of its corresponding prototype was conducted. VAWTs were simulated numerically by Fluent software. With the application of the k-oJ SST turbulence model, SIMPLE algorithm and sliding grid techniques, the Rotor Power coefficient of the wind turbines with original airfoil and modified airfoil at different installation angles was studied. The result shows that, at different installation angles, the aerodynamic performance of the VAWT with modified airfoil profile is less sensitive to the installation angles than that of the original VAWT, and the working range of high efficiency was widened. The method of modification of airfoil has apparent application value.

关 键 词：垂直轴风力机 气动性能 翼型修型 安装角 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]