| 飞机巡航近场噪声经验预测方法研究 |
| |
| 引用本文： | 黄晓聃,乔渭阳,孙爽.飞机巡航近场噪声经验预测方法研究[J].科学技术与工程,2009,9(5). |
| |
| 作者姓名： | 黄晓聃 乔渭阳 孙爽 |
| |
| 作者单位： | 西北工业大学动力与能源学院,西安,710072 |
| |
| 摘 要： | 巡航状态下的机体表面噪声,其声源分为点声源和分布式声源.推进系统噪声中,风扇、压气机、核心、涡轮噪声可视为点声源,采用飞行修正的远场噪声预测方法.喷气噪声和机体噪声(机翼或尾翼后缘噪声、机身湍流边界层噪声)则为分布式声源,采用工程近场的方法进行预测.采用噪声源半经验参数关联模型,发展了巡航条件下的机体表面噪声预测计算方法.该计算方法可以对飞机机体(机身、机翼或尾翼等)外表面声场进行预测,并能够对各噪声源的辐射特性进行计算.以ARJ21-700为例:飞行高度10 000 m,飞行马赫数0.7,对机背表面(纵轴)5个点进行了声场预测.计算结果表明:风扇噪声是巡航条件下的最主要声源,其次为涡轮噪声、后缘噪声以及喷气混合噪声,各观察点的次要噪声源有所不同.
|
| 关 键 词： | 噪声预测 发动机噪声 机体噪声 近场噪声 气动声学 |
Study on the Surface Noise Prediction for Aircraft Cruise |
| |
| HUANG Xiao-dan,QIAO Wei-yang,SUN Shuang.Study on the Surface Noise Prediction for Aircraft Cruise[J].Science Technology and Engineering,2009,9(5). |
| |
| Authors: | HUANG Xiao-dan QIAO Wei-yang SUN Shuang |
| |
| Institution: | School of Engine and Energy;Northwestern Polytechnical University;Xi'an 710072;P.R.China |
| |
| Abstract: | The noise source contain point source and distribution source insurface of airplane in cruising condition. Fan/compressor,core,turbine noise can be regarded as point source using far-field predicting method with fly forward effect. Jet noise and airframe noise (fuselage turbulence boundary layer and trailing edge) are the distribution source with the near-field method to an estimate. Semi-empirical model was used for airplane noise predicting. The method can use to predict the sound load of airplane includi... |
| |
| Keywords: | noise prediction engine noise fuselage noise near-field noise aeroacoustics |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
