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1. 东方电气风电有限公司
2. 扬州大学电气与能源动力工程学院
Published:2021
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[1]曾明伍,孙振业,朱卫军,等.风力机翼型尾缘厚度对气动噪声的影响[J].新疆大学学报(自然科学版)(中英文),2021,38(04):490-498.
[1]曾明伍,孙振业,朱卫军,等.风力机翼型尾缘厚度对气动噪声的影响[J].新疆大学学报(自然科学版)(中英文),2021,38(04):490-498. DOI: 10.13568/j.cnki.651094.651316.2020.07.09.0001.
DOI:10.13568/j.cnki.651094.651316.2020.07.09.0001.
文章研究不同尾缘厚度对翼型气动噪声的影响.选取DU 93-W-210和DU 97-W-300翼型作为研究对象
采用XFOIL计算翼型的气动数据
并结合半经验模型模拟翼型气动噪声特性.通过改变翼型的尾缘厚度
研究尾缘厚度对气动特性和声压级的影响.结果表明:尾缘增厚对较大厚度的DU 97-W-300翼型升阻比的影响较小
而对较薄的DU93-W-210翼型的影响明显.和较薄翼型相比
较厚翼型的尾缘厚度增加导致的声压级相对变化较大.在一定范围内
尾缘增厚会导致声压级先增加后降低
应严格控制较薄翼型的尾缘厚度;但是在一定范围内增加较厚翼型的尾缘厚度
可以获得较大的结构性能提升而损失较小的升阻比
并获得较低的噪声水平.
In this paper
the influence of different trailing edge thickness on aerodynamic noise of airfoil is studied.The DU 93-W-210 and DU 97-W-300 airfoils are chosen as research object
and the XFOIL is used to calculate the aerodynamic data of airfoils
and semi-empirical model is used to simulate the aero-acoustic characteristics of airfoils. The influence of trailing edge thickness on aerodynamic characteristics and sound pressure level was studied. Results show that the trailing edge thickness has little effect on the lift-drag ratio of DU 97-w-300 airfoil which has larger thickness
while it has obvious effect on the thinner DU 93-w-210 airfoil. Compared with the thinner airfoil
the sound pressure level of the thicker airfoil changes greatly. In a certain range
the sound pressure level increases first and then decreases when the trailing edge becomes thicker. The trailing edge thickness of thinner airfoils should be strictly controlled. However
increasing the trailing edge thickness of thicker airfoils in a certain range can improve the structural performance
reduce the loss of lift-drag ratio and achieve a lower noise level.
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