机械科学与技术2024，Vol.43Issue(1)：180-186,7.DOI:10.13433/j.cnki.1003-8728.20220220
限流孔板在飞机空调管道的噪声分析及优化设计
Noise Analysis and Optimization Design of Restriction Orifice Plate in Aircraft Air Conditioning Duct
赵海宇 1周强 1宋经远 2王青山1
作者信息
- 1. 中南大学 高性能复杂制造国家重点实验室,长沙 410083
- 2. 中国航发沈阳发动机研究所,沈阳 110015
- 折叠
摘要
Abstract
To analyze the noise characteristics of restriction orifice in aircraft air conditioning duct system and carry out the noise reduction optimization design of restriction orifice plate,the computational fluid dynamics method is used to calculate the steady flow field of a straight duct with the restrictor orifice at first and explore the flow state of the airflow through the orifice.Then,according to the large eddy simulation method and the Ffowcs Williams and Hawkings(FW-H)equation,the transient flow field and acoustic calculation of the duct are carried out,and the flow-induced noise characteristics of restriction orifice at the aircraft cockpit monitoring point are analyzed.Finally,the effects of restriction orifices with different aperture on the cockpit monitoring points are compared and studied,and a better low-noise structure design form of the orifice plate is proposed.The research results show that increasing the flow aperture can improve the noise reduction effect,but the pressure drop performance is reduced,and the noise reduction of the restriction orifice needs to be considered comprehensively with its pressure drop performance.关键词
限流孔板/CFD方法/噪声特性/优化设计Key words
restriction orifice plate/CFD method/noise characteristics/optimization design分类
通用工业技术引用本文复制引用
赵海宇,周强,宋经远,王青山..限流孔板在飞机空调管道的噪声分析及优化设计[J].机械科学与技术,2024,43(1):180-186,7.
