升力型风力机与升阻型风力机气动性能分析

为深入研究升阻型风力机与升力型风力机的气动性能，基于CFD软件，采用k—wSST湍流模型，利用双滑移网格技术对2者的启动风速和切入风速进行流场计算，研究在低风速下2种风力机的气动性能。结果显示：升阻型风力机具有较大的启动力矩、较小的切人风速以及较小的启动风速；升阻型风力机在低风速下比升力型风力机更容易启动，且在失速之前升阻型风力机的输出功率较大，但在失速之后升阻型风力机输出功率低于升力型风力机。

Analysis of Aerodynamic Performance for Lift Wind Turbine and Lift-drag Wind Turbine

In order to deeply research aerodynamic performance for lift wind turbine and lift-drag wind turbine, based on the CFD software this article used k-to SST turbulent model, adopted double moving mesh technology, carried out field calculation on lift wind tur- bine and lift-drag wind turbine, calculated their start-up wind speed and cut-in wind speed, research their aerodynamic performance under low wind speed. The result showed that lift-drag wind turbine had the larger starting torque, smaller cut-in wind speed and smal- ler start-up wind speed ;lift-drag wind turbine was easier to start-up than lift wind turbine at low wind speed while the lift-drag wind tur- bine＇ s output power was larger before stall, but its output power was lower than that of lift wind turbine after stall.