摘要
进行风力机翼型大迎角风洞试验时,洞壁干扰比较明显.为改善试验结果的准确性与可靠性,采用大涡模拟(large eddy simulations,LES)方法对风力机翼型全流向洞壁干扰影响进行数值模拟,分析洞壁对翼型大迎角状态速度的影响.结果表明,LES数值模拟可以为风力机翼型全流向绕流提供准确、可靠的气动力数据;越接近极大迎角(90°),受到洞壁干扰,来流绕过翼型后形成脱落涡的速度越大.
When the test of wind turbine airfoil at very high angle of attack is put forward,the wall interference is obvious.To improve the accuracy and reliability of the test results,the wall interference of the wind turbine airfoils at the full flow is studied by LES method.The influence of the wall on the velocity of the airfoil at high angle of attack is analyzed.The results show that the computational results of LES method can provide accurate and reliable aerodynamic da-ta for the whole flow of the wind turbine airfoil.The angle of attack is closer to the 90 degree,the velocity of the shedding vortex around the wind turbine airfoil is greater with wall disturbance influence.
出处
《纺织高校基础科学学报》
CAS
2017年第4期567-573,共7页
Basic Sciences Journal of Textile Universities
基金
山西省自然科学基金面上项目(201601D011013)
山西省青年科技研究基金资助项目(2015021021)
太原科技大学校博士启动基金资助项目(20152027)
关键词
大涡模拟
壁压信息法
翼型
极大迎角
洞壁干扰修正
large eddy simulations
wall pressure message
airfoil
the very high angle of at-tack
wall interference correction
