兵工自动化2024，Vol.43Issue(12)：90-96,7.DOI:10.7690/bgzdh.2024.12.019
不同消声碗结构的消声器膛口射流噪声数值模拟
Numerical Simulation of Silencer Muzzle Jet Noise with Different Silencer Bowl Structures
游鹏 1周克栋 2何伟 1赫雷 2张迪 2缪桓举2
作者信息
- 1. 重庆建设工业(集团)有限责任公司智能武器研究所,重庆 400054
- 2. 南京理工大学机械工程学院,南京 210094
- 折叠
摘要
Abstract
In order to get higher noise reduction of the silencer,the computational fluid dynamics(CFD)and the computational aeroacoustics(CAA)are selected for numerical simulation.Under the working condition of firing 9 mm×19 mm pistol cartridge,the number and inclination angle of the silencer bowls are selected as the research variables.The inner and the outer flow field of the silencer,and the information of the fluid pressure on the integrated surface of the sound source are obtained by large eddy simulation(LES)numerical calculation method,and then the acoustic information on the integrated surface of the sound source,and the sound pressure signal of the measuring points of the far filed can be calculated according to the acoustic wave equation.Finally,the overall sound pressure level(OSPL)of jet noise at different specified measuring points is obtained.The analysis shows that the silencer bowl with 60° inclination has the lowest OSPL at all measuring points,and when the change in the number of silencer bowls causes the adjacent bowls and the bullet to form the maximum confined chamber,the lowest overall sound pressure level can be got at all measuring points.关键词
消声器/消声碗/射流噪声/大涡模拟/计算气动声学Key words
silencer bowl/silencer/jet noise/large eddy simulation/computational aeroacoustic分类
军事科技引用本文复制引用
游鹏,周克栋,何伟,赫雷,张迪,缪桓举..不同消声碗结构的消声器膛口射流噪声数值模拟[J].兵工自动化,2024,43(12):90-96,7.
