Reflection and transmission of elastic waves at an elastic/porous solid saturated by two immiscible fluids
Reflection and transmission of elastic waves at an elastic/porous solid saturated by two immiscible fluids
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DOI：
10.1016/j.ijsolstr.2005.05.056
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发表时间：
2006-04
影响因子：
3.6
通讯作者：
S. K. Tomar;A. Arora
中科院分区：
文献类型：
--
作者：
S. K. Tomar;A. Arora
Wave propagation in a porous elastic medium saturated by two immiscible fluids is investigated. It is shown that there exist three dilatational waves and one transverse wave propagating with different velocities. It is found that the velocities of all the three longitudinal waves are influenced by the capillary pressure, while the velocity of transverse wave does not at all. The problem of reflection and refraction phenomena due to longitudinal and transverse wave incident obliquely at a plane interface between uniform elastic solid half-space and porous elastic half-space saturated by two immiscible fluids has been analyzed. The amplitude ratios of various reflected and refracted waves are found to be continuous functions of the angle of incidence. Expression of energy ratios of various reflected and refracted waves are derived in closed form. The amplitude ratios and energy ratios have been computed numerically for a particular model and the results obtained are depicted graphically. It is verified that during transmission there is no dissipation of energy at the interface. Some particular cases have also been reduced from the present formulation.
