摘要
从实际工业噪声控制中大面积有壁障噪声源的噪声控制问题出发,应用Fresnel-Kirchhoff理论和Babinet原理,建立计算无限大声屏障绕射声衰减的理论模型。通过数值求解,分析了声源、接收点位置,声波频率和地面反射等对声屏障绕射声衰减的影响。
Considering from the design of sound barrier for planar noise source enclosed by upright wall, the Fresnel-Kirchhoff approximation is combined with the Babinet principle to set up a numerical model. The diffraction attenuation of infinite thin sound barriers to point sources are calculated, and the influences of Sound source and receiver positions, noise frequency and reflection from the ground are analyzed.
出处
《噪声与振动控制》
CSCD
北大核心
2007年第6期100-103,共4页
Noise and Vibration Control
关键词
声学
声屏障
绕射声衰减
菲涅耳-柯西霍夫近似
数值模拟
acoustics
sound barrier
diffraction attenuation
Fresnel-Kirchhoff approximation
numerical simulation
作者简介
赵俊卿(1964-),女,山东邹平人,山东建筑大学理学院教授,博士,从事基础声学理论与应用研究。