摘要
以某上风向定桨水平轴风力机风轮为研究对象进行数值模拟,采用不可压N-S方程和k-!SST两方程湍流模型,数值模拟了不同风速下风力机风轮的流动特性。结果表明:随着风速的增大,靠近叶片中部截面最先发生失速。在此基础上,分析了叶片整体的压力与速度分布。
An upwind horizontal axis wind turbine rotor was selected as investigation objective of numerical simulation. An incompressible reynolds averaged Navier-Stokes solver and κ -ω SST turbulent model were used to simulate flow characteristic of this HAWT rotor at different wind speeds. Pressure and velocity distributions on different blade sections were analyzed. It is showed that stall firstly occurs on the section nearthe middle of blade with the increasing of wind speed. Further more, pressure and velocity distributions on the whole blade were analyzed .
关键词
风力机
数值模拟
气动性能
失速
wind turbine
numerical simulation
aerodynamic performance
stall
