| 液饱和多孔介质中Rayleigh型波的传播 |
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| 引用本文： | 李德源,刘占芳,张湘伟.液饱和多孔介质中Rayleigh型波的传播[J].汕头大学学报(自然科学版),2001,16(2):49-55. |
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| 作者姓名： | 李德源 刘占芳 张湘伟 |
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| 作者单位： | 1. 汕头大学机械电子工程系,汕头,515063
2. 重庆大学工程力学系,重庆,400044 |
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| 摘 要： | 研究了由多孔固体骨架和无粘流体构成的多孔介质的瑞利型表面波的传播 ,获得了联系着复波数对频率的依赖关系的弥散方程 ,结果表明 :其表面波是弥散和非均匀的 ,表面波沿多孔介质表面衰减 ,同时其振幅远离介质表面呈指数衰减
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| 关 键 词： | 瑞利型波 弥散 衰减 |
| 文章编号： | 1001-4217(2001)02-0049-07 |
| 修稿时间： | 2000年11月29 |
Propagation of Rayleigh-type wave in fluid-saturated porous medium |
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| Abstract: | In this paper is conducted an investigation into the propagation of surface wave of Rayleigh type over a porous medium consisting of a kind of porous solid skeleton with inviscid fluid flowing inside.A dispersion equation is derived which is characterized by frequency dependent wave numbers of complex quantity,with the result that the surface waves,being dispersive and inhomogeneous,attenuate along the surface of the medium,whereas their amplitude decay exponentially while receding from the surface of the medium. |
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| Keywords: | Rayleigh type wave dispersion attenuation |
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