PORE ROUGHNESS EFFECTS ON HIGH-FREQUENCY PERMEABILITY

摘要

The high-frequency behaviour of the dynamic permeability is studied. In the case that the solid-fluid interface appears locally flat, we give a new derivation for the characteristic lenght A. In the case of wedge-shaped intrusions, the classical approach is modified by an additional higher-order term, which is depending on the apex angle of the wedge. Precise numerical simulations confirmed this dependency.