摘要
根据Ｂｉｏｔ多孔媒质声学理论及多孔媒质界面边界条件，导出了腔内为流体的柱状多孔媒质结构中任意周向波数声导波的广义色散方程。数值计算了其中轴对称和非轴对称声导波的色散特性，考察了流体多孔媒质界面特性及多孔媒质中慢纵波对声导波色散特性的影响。结果表明，利用Ｂｉｏｔ多孔媒质声传播模型和多孔媒质界面边界条件。
On the basis of the Biot theory about acoustic waves in a porous
medium
and boundary conditions of the porous medium interface, the generalized frequency equations
for guided waves with arbitrarily circumferential wavenumber in cylindrical porous structures
with a fluid\|filled inner bore are derived. Numerical computations are made for dispersion
characteristics of axisymetric and flexible guided waves in the cylindrical porous structures.
The influences of slow longitudinal wave in the porous medium and boundary conditions for the
fluid\|porous medium interface on guided waves are considered. The Biot theory of acoustic
wave in a porous medium and boundary conditions of the porous medium interface are
favorable to obtain the dispersion characteristics of guided waves with arbitrarily
circumferential wavenumber in cylindrical porous structrues.\=
出处
《石油大学学报（自然科学版）》
CSCD
1999年第3期105-108,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
声导波
多孔媒质
慢纵波
边界
固体结构
guided wave
porous
medium
slow longitudinal wave
boundary conditions\
