Interface wave propagation characteristics of porous cylinder surrounded by fluid

This paper devotes to investigate the propagation characteristics of the interface wave on the fluid surrounded porous cylinder, and special emphasis is paid on the dependence of the dispersion relation on the porous media parameters.A model of porous cylinder surrounded by fluid is established theoretically; based on the elastic-dynamic theory of liquidsaturated porous solid and wave theory, the dispersion curves and transient response of open-pores and sealed-pores are computed numerically, and their dependence on the cylinder radius and porous medium parameters are analyzed. The results show that the Stoneley-Scholte wave can be clearly distinguished with other waves in the time domain, and the Stoneley-Scholte wave dispersion relates intimately with the porosity of the porous medium and cylinder radius, whilst the permeability of the media has little effect on the dispersion property.