Abstract
The contact boundary conditions at the interface between two fluid-saturated porous bodies are derived. The general derivation is performed within the well-founded framework of the Theory of Porous Media (TPM) based on the constituent balance relations of mass, momentum, and energy accounting for finite discontinuities at the contact surface. Particular attention is drawn to the effects associated with the interstitial fluid flux across the interface. The derived contact conditions include two kinematic continuity conditions for the solid velocity and the fluid seepage velocity as well as two jump conditions for the effective solid stress and the pore-fluid pressure. As an application, the common case of biphasic porous media contact proceeding from materially incompressible constituents and inviscid fluid properties is discussed in detail.
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Communicated by S. L. Gavrilyuk
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Markert, B., Monastyrskyy, B. & Ehlers, W. Fluid penetration effects in porous media contact. Continuum Mech. Thermodyn. 20, 303–315 (2008). https://doi.org/10.1007/s00161-008-0083-z
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DOI: https://doi.org/10.1007/s00161-008-0083-z