Title: Interface wave propagation characteristics of liquid-immersed porous cylinder

Author(s): HAN Qingbang; XU Zhouchen; TONG Ziwei; QI Lihua; WANG Peng; SHAN Minglei; ZHU Changping;

Affiliation(s): College of IOT Engineering of Hohai University

Abstract: This paper devotes to investigate the propagation characteristics of the interface wave on the liquid-immersed porous cylinder, and special emphasis is paid on the dependence of the dispersion relation on the porous media parameters. A model of liquid-immersed porous cylinder is established theoretically. Based on the elastic-dynamic theory of liquid-saturated porous solid and wave theory, the dispersion curves and transient response of open-pores and sealed-pores are simulated 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.