S系列新翼型风力机叶尖近尾迹区域流场数值计算与分析  

NUMERICAL CALCULATION AND ANALYSIS OF BLADE TIP NEAR WAKE REGION OF S SERIES NEW AIRFOIL WIND TURBINE

作　　者：代元军[1,2] 汪建文[1,3] 吴伟民[1] 张立茹[1,3] 赵宏宇[1] 

机构地区：[1]内蒙古工业大学能源与动力工程学院,呼和浩特010051 [2]新疆工程学院,乌鲁木齐830091 [3]风能太阳能利用技术省部共建教育部重点实验室,呼和浩特010051

出　　处：《太阳能学报》2014年第2期195-201,共7页Acta Energiae Solaris Sinica

基　　金：教育部博士点专项科研基金(20091514110001);国家自然科学基金(50976047);新疆教育厅高校科研计划(XJEDU2011S43)

摘　　要：以S系列新翼型为例,针对设计风速最佳攻角含有叶尖涡的复杂流动,提出一种采用分区域过渡层网格的方法来改善叶尖涡模拟的新网格生成策略。这种利用过渡层网格从叶片的贴体网格区域向中部加密网格区域中捕捉叶尖涡形成的位置和大小,通过控制网格梯度变化能获得高精度计算结果。数值计算和分析表明:该网格能合理捕捉到S系列新翼型叶尖涡的细节变化信息以及叶轮表面压力分布的细节变化特性,发现了风力机叶尖涡在初期向内迁移的现象。证明该网格生成策略合理有效。Taking S series new airfoil as an example, the new grid generation strategy was put forward based on the optimum angle of attack of design wind speed with the tip vortex in complex flow, the regional transition layer grid method was used to improve tip vortex simulation. Useing blade body fitted grid area to the central region of the transition layer of mesh grid could capture the tip vortex formation position and size, the high accuracy calculation results could be obtain through control of mesh gradient. The numerical experiment and analysis showed that the grid can reasonably capture details of change information of tip vortices of S series new aerofoil, and detail change characteristics of impeller pressure distribution and wind turbine tip vortex inward migration phenomenon in the early days were discovered. The mesh generation strategy is reasonable and effective.

关 键 词：风力机 S系列新翼型 NACA系列传统翼型 叶尖涡 过渡层网格 网格梯度 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]