翼型/平板湍流边界层脉动压力波数-频率谱声学风洞阵列实验研究  

Array experimental study on turbulent boundary layer fluctuation pressure wavenumber-frequency spectrum of airfoil/plate in acoustic wind tunnel

作　　者：陈宝凯 刘婷婷[1] 李冯杰 李士伟[2] 赵鲲 CHEN Baokai;LIU Tingting;LI Fengjie;LI Shiwei;ZHAO Kun(School of Information Engineering,Southwest University of Science and Technology,Mianyang 621010,China;State Key Laboratory of Aerodynamics,China Aerodynamics Research and Development Center,Mianyang 621000,China)

机构地区：[1]西南科技大学信息工程学院,四川绵阳621010 [2]中国空气动力研究与发展中心空天飞行空气动力科学与技术全国重点实验室,四川绵阳621000

出　　处：《兵器装备工程学报》2024年第12期77-85,共9页Journal of Ordnance Equipment Engineering

摘　　要：在声学风洞中利用嵌入式齐平安装的脉动压力传感器表面线阵列,对光滑平板和不同迎角翼型的湍流边界层脉动压力波数-频率谱进行了测量和分析,从而比较波数-频率谱以及评估ChaseⅠ模型的预测性能。实验结果揭示了线阵列在测量平板和翼型的波数-频率谱方面的测量能力和准确性。平板的实测数据与ChaseⅠ模型预测较为吻合,而翼型的预测结果则显示出一定偏差,说明表面压力梯度对波数-频率谱有影响。此外,风速和迎角变化也显著影响翼型的波数-频率谱,说明ChaseⅠ模型在翼型预测上存在局限性。本文研究成果可为流激振动与噪声工程应用与领域研究提供参考。In the acoustic wind tunnel,embedded flush-mounted pressure fluctuation sensors arranged in a surface array were used to measure and analyze the wavenumber-frequency spectra of the turbulent boundary layer on a smooth plate and airfoils at different angles of attack.This study aimed to compare the wavenumber-frequency spectra and evaluate the predictive performance of the ChaseⅠmodel.The experimental results demonstrated the measurement capability and accuracy of the surface array in assessing the wavenumber-frequency spectra of both the smooth plate and the airfoils.The measured data for the smooth plate showed good agreement with the predictions of the ChaseⅠmodel,while the predictions for the airfoils exhibited some deviations,indicating that surface pressure gradients affect the wavenumber-frequency spectra.Furthermore,variations in wind speed and angle of attack significantly influenced the wavenumber-frequency spectra of the airfoils,highlighting the limitations of the ChaseⅠmodel in predicting such spectra for airfoils.The findings of this study can provide valuable references for applications and research in flow-induced vibration and noise engineering.

关 键 词：波数-频率谱 翼型 平板 脉动压力传感器表面阵列 ChaseⅠ模型 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]