Sound propagation in air-saturated random packings of beads

被引:51
作者
Allard, JF
Henry, M
Tizianel, J
Kelders, L
Lauriks, W
机构
[1] Univ Maine, Acoust Lab, CNRS, UMR 6613, F-72085 Le Mans 9, France
[2] Katholieke Univ Leuven, Dept Nat Kunde, Lab Akoest & Therm Fys, B-3001 Heverlee, Belgium
关键词
D O I
10.1121/1.423766
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
In the pore space of packed grain material, transport properties are characterized by macroscopic parameters. Some of them, tortuosity, characteristic dimensions, viscous permeability, and trapping constant, are measured for a random packing of glass beads and compared to evaluations performed in previous studies. These parameters are used to predict the surface impedance at normal incidence of a layer of glass beads. The predictions are compared to measurements performed at normal incidence in a Kundt tube. (C) 1998 Acoustical Society. of America. [S0001-4966(98)04610-4]
引用
收藏
页码:2004 / 2007
页数:4
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