CONVOLUTION QUADRATURE BOUNDARY ELEMENT METHOD FOR ANTIPLANE WAVE ANALYSIS OF FROZEN POROUS MEDIA

Abstract

This paper presents a time-domain boundary element method for antiplane wave analysis of frozen porous media. Frozen porous media is the three phase model which consists of solid skeleton, pore fluid, and ice matrix, and is adequate to describe the dynamic behavior of seabed layer involving Methane Hydrate. The proposed boundary element method employs a convolution quadrature method based on implicit Runge-Kutta method for temporal discretization. Wave scattering by an inclusion in the frozen porous media has been solved and the results provide that S2-wave plays an important role for the evaluation of the volume ratio of Methane Hydrate in the seabed layer.