Porous Media: Theory, Experiments and Numerical Applications

ISBN-13: 9783540437635 / Angielski / Twarda / 2002 / 459 str.

Ehlers, Wolfgang

Opis

The present volume offers a state-of-the-art report on the various recent sci entific developments in the Theory of Porous Media (TPM) comprehending the basic theoretical concepts in continuum mechanics on porous and mul tiphasic materials as well as the wide range of experimental and numerical applications. Following this, the volume does not only address the sophisti cated reader but also the interested beginner in the area of Porous Media by presenting a collection of articles. These articles written by experts in the field concern the fundamental approaches to multiphasic and porous materials as well as various applications to engineering problems. In many branches of engineering just as in applied natural sciences like bio- and chemomechanics, one often has to deal with continuum mechanical problems which cannot be uniquely classified within the well-known disci plines of either "solid mechanics" or "fluid mechanics." These problems, characterized by the fact that they require a unified treatment of volumetri cally coupled solid-fluid aggregates; basically fall into the categories of either mixtures or porous media. Following this, there is a broad variety of problems ranging in this category as for example the investigation of reacting fluid mix tures or solid-fluid suspensions as well as the investigation of the coupled solid deformation and pore-fluid flow behaviour of liquid- and gas-saturated porous solid skeleton materials like geomaterials (soil, rock, concrete, etc. ), polymeric and metallic foams or biomaterials (hard and soft tissues, etc).

Spis treści

Foundations of multiphasic and porous materials.- Modelling of saturated thermo-elastic porous solids with different phase temperatures.- Micropolar mixture models on the basis of the Theory of Porous Media.- Elasto-plastic behaviour of a granular material with an additional scalar degree of freedom.- Mechanical aspect on drying of wet porous media.- Coupling between the evolution of a deformable porous medium and the motion of fluids in the connected porosity.- Fixed negative charges modulate mechanical behaviours and electrical signals in articular cartilage under unconfined compression — a triphasic paradigm.- Time adaptive analysis of saturated soil by a discontinuous-Galerkin method.- Biphasic description of viscoelastic foams by use of an extended Ogden-type formulation.- Experimental measurement of electrical conductivity and electro-osmotic permeability of ionised porous media.- Theory and numerics of localization in a fluid-saturated elasto-plastic porous medium.- Geometrical and material non-linear analysis of fully and partially saturated porous media.- Waves in poroelastic half space: Boundary element analyses.- Multicomponent reactive transport modelling: Applications to ore body genesis and environmental hazards.- A numerical model and its finite element solution for multiphase flow: Application to pulp and paper processing.- Author Index.

O autorze

Prof. Dr.-Ing. Wolfgang Ehlers studierte Bauingenieurwesen an der Universität Hannover, promovierte und habilitierte an der Universität Essen und war 1991-95 Professor für Mechanik an der TU Darmstadt. Seit 1995 ist er Professor für Technische Mechanik an der Universität Stuttgart. Seine Arbeitsgebiete umfassen die Kontinuumsmechanik, die Materialtheorie, die Experimentelle und die Numerische Mechanik. Dabei ist er insbesondere an der Modellierung mehrphasiger Materialen bei Anwendungen im Bereich der Geomechanik und der Biomechanik interessiert.

Blurb

The present volume offers a state-of-the-art report on the various recent scientific developments in the Theory of Porous Media (TPM) comprehending the basic theoretical concepts in continuum mechanics on porous and multiphasic materials as well as the wide range of experimental and numerical applications. Following this, the volume does not only address the sophisticated reader but also the interested beginner in the area of Porous Media by presenting a collection of articles. These articles written by experts in the field concern the fundamental approaches to multiphasic and porous materials as well as various applications to engineering problems.