Heterogeneous modelling behaviour at an interface in porous media |
| |
| Authors: | G Quiroga-Goode JM Carcione |
| |
| Institution: | 1. Osservatorio Geofisico Sperimentale, P.O. Box 2011, I-34016, Opicina, Trieste, Italy
|
| |
| Abstract: | The fluid flow induced by an incident wave at a discontinuity separating two porous media is governed by the hydraulic permeabilities of both media and that of the interface. In the context of Biot’s theory, we derive the time-harmonic Green’s function for the two half-space problem allowing incident fast and slow dilatational waves to assess the heterogeneous modelling behaviour for diverse hydraulic conditions. It is found that when at least one of the media is permeated with inviscid fluids, heterogeneous modelling simulates open boundary conditions. On the other hand, when the model is saturated with viscous fluids, the modelling reproduces restrained fluid flow whose values correspond to sealed pore interface conditions, in agreement with the theoretical results. Therefore the numerical technique models correctly the wave diffusion and propagation phenomena attendant at the boundary. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
