北京林业大学学报2016，Vol.38Issue(12)：113-120,8.DOI:10.13332/j.1000-1522.20160102
6 MF-30便携式风力灭火机气动噪声分析
Aerodynamic noise analysis of 6 MF-30 portable pneumatic extinguisher
摘要
Abstract
Portable pneumatic extinguisher is one of the most important equipment for forest fire-fighting in China. But the noise of portable pneumatic extinguisher may have serious physiological and psychological effects on operators. Simulation via FLUENT and noise test experiment were carried out to determine the position of noise source. In addition, several suggestions about noise reduction of portable pneumatic extinguisher were given. The results indicate that acoustic field could be computed via two-dimensional model when large eddy simulation and Flowcs-Williams/Hawkings equation are used; the muffler should be considered during noise simulation; the main aerodynamic noise sources are impeller and vortex tongue;air duct noise contributing to the total noise is minimal;it is suggested that increasing air director could reduce parotic noise caused by working machine.关键词
气动噪声/FLUENT软件/仿真Key words
aerodynamic noise/FLUENT software/simulation分类
农业科技引用本文复制引用
陈晓璇,李文彬..6 MF-30便携式风力灭火机气动噪声分析[J].北京林业大学学报,2016,38(12):113-120,8.基金项目
教育部高等学校博士学科点专项(20120014110012)。 （20120014110012）
