摘要
本文引入两个与声衰减有关的介质参量,定义了声传播系数;导出了具有粘滞性衰减和导热性衰减的均匀介质中的声波波动方程;分析了频率和介质参数对声波衰减、相移及声速的影响,所得理论结论能较好地解释有关文献的实验结果.
Two new medium parameters related to acoustic attenuation are introduced and an acoustic propagation coefficient is defined. An aconstic wave equation for a viscous and thermo-diffusive homogeneous medium is derived. The effect of frequency and medium parameters on acoustic attenuation, phase shift and speed of acoustic wave are analyzed. The conclusions are capable of giving a satisfactory explanation to the experimental results in relevant literature.
出处
《华中理工大学学报》
CSCD
北大核心
1992年第4期55-59,共5页
Journal of Huazhong University of Science and Technology
基金
中国石油天然气总公司"八五"攻关项目
关键词
介质参数
衰减
声传播
频率
medium parameter
loss
acoustic propagation
frequency
