某航空部件的排气噪声预测研究  

Exhaust Noise Prediction Method Investigation on An Aviation Component

作　　者：杨泳[1] 连洁 向宏辉 徐开俊[1] YANG Yong;LIAN Jie;XIANG Hong-hui;XU Kai-jun(Department of Flight Technology,Civil Aviation Flight University of China,Guanghan 618307,China;No.1 Engine Department,Chengdu Hang Li（Group）Industrial Co.,Ltd.,Pengzhou 611936,China;Laboratory of Turbomachinery Experiment,AECC Sichuan Gas Turbine Establishment,Jiangyou 621703,China)

机构地区：[1]中国民用航空飞行学院飞行技术学院,四川广汉618307 [2]成都航利(集团)实业有限公司发动机一部,四川彭州611936 [3]中国航发四川燃气涡轮研究院叶轮机试验研究室,四川江油621703

出　　处：《西安航空学院学报》2018年第5期30-34,共5页Journal of Xi’an Aeronautical Institute

基　　金：国家自然科学基金民航联合基金(U1533127);中国民用航空飞行学院科研基金面上项目(J2015-02)

摘　　要：为了预测某航空部件的排气噪声,以某型民用航空部件中试验器排气系统为研究对象,通过经验/半经验方法建立噪声预测模型,经过流场数值和波动理论仿真不同工况下该型航空部件排气噪声拟生源和声传播相关数值。预测得出总排气口附近噪声超过160dB,峰值频率约为400Hz。该预测结果为试验器降噪设计和试验器厂房选址提供了技术基础。To predict civil aviation component exhaust noise,a prediction model against certain type aviation component exhaust noise is established and implemented by using empirical method/semi-empirical method, which is carried out based on computational simulation into noise source and sound propagation separately for a test facility exhaust system as research object under different operating conditions.The prediction result shows that the noise around facility outlet exceeds 160 dB and peak frequency is about 400 Hz,which can provide technical reference for experiment site selection and noise reduction design of workflow.

关 键 词：喷流噪声 仿真 声功率 声压级 峰值频率 

分 类 号：V211.73[航空宇航科学与技术—航空宇航推进理论与工程]