非线性声学求解在受油管噪声预测中的应用  

An Application of Non-linear Acoustics Solver in the Noise Prediction of Refueling Tube

作　　者：张野平[1] 段卓毅[1] 侯银珠[1] 

机构地区：[1]中航工业第一飞机设计研究院,陕西西安710089

出　　处：《航空科学技术》2015年第9期74-78,共5页Aeronautical Science & Technology

摘　　要：针对安装固定受油装置的飞机,采用雷诺平均N-S方程(RANS)求解流场、非线性噪声求解方程(NLAS)求解声场相结合的方法,对飞机驾驶舱周围的噪声变化情况进行了模拟,给出了在一定飞行条件下受油管附近驾驶舱周围不同位置的声压云图及声压频谱图,并将安装有受油装置的飞机和原型机在相同条件、相同位置的声压频谱、噪声进行对比。结果显示,安装受油管后舱外噪声声压级较原型机增加3d B左右。The combination of Reynolds-averaged Navier-Stokes （RANS） and Non-linear Acoustics Solver （NLAS） solving flow field and acoustical field respectively were applied to simulate the variation of noise for the fixed refueling tube mounted on a certain type of aircraft. Acoustics pressure contour and noise spectra at different positions were given. Then, in the same position and condition, it compared the aircraft＇s installed refueling device with prototype＇s acoustics pressure spectrum and noise. The results show that an increase of 3 dB in acoustics pressure level can be expected.

关 键 词：非线性声学 受油管 噪声预测 RAN$ 

分 类 号：V216.1[航空宇航科学与技术—航空宇航推进理论与工程]