By Bai, Miao; Elsworth, Derek
''Coupled methods in Subsurface Deformation, circulation, and Transport'' provides a rational and unified remedy of coupled procedures, with emphasis at the coupling and feedbacks current the place reliable deformation, fluid movement, and solute shipping mix, and within the illustration of heterogeneous media via multi-porosity ways. Analytical and numerical recommendations are offered for subsurface platforms subjected to various mechanical, thermal, and chemical disturbances. this is often a useful reference ebook or instructing textual content, from which civil, mining, petroleum, environmental, chemical, procedure, and geological engineers, and geological scientists will achieve an knowing of the theoretical bases and connections among deformation, move, and delivery within the subsurface. Likewise, readers will discover ways to distinguish among coupled and uncoupled techniques and their respective restraints and significances, understand the consequences of heterogeneities on deformation, movement, and delivery within the subsurface, evaluation or research well known and distinctive analytical and numerical equipment within the similar fields, and hyperlink basic theories with functional functions in multidisciplinary components. major, new, and not earlier than released options, are integrated
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Extra resources for Coupled processes in subsurface deformation, flow, and transport
The finite element method (FEM) enables the true complex geometry of the physical system to be readily represented through the meshing of a mosaic of arbitrarily shaped elements. The FEM is perhaps the most powerful numerical 12 means among all competing methodologies due to its ability to: (a) treat complex nonlinearities and material heterogeneities, (b) accommodate flexible geometric configurations, and (c) reach desired computational accuracy with the current computer technology. In fact, the FEM is so powerful, it has become the dominant numerical tool (Zienkiewicz 1983).
Because flow in fractures is more significant than interstitial flow in the matrix pores, fracture permeability is typically larger than matrix permeability. , transient flow and quasi-steady flow. The latter approach is adopted in the present descriptions. • The impact of fluid pressures on solid equilibrium is incorporated in a lumped fashion, envisioned as separate seepage forces acting on the solid grains. Volumetric strain rate changes affect flux variations for both fractures and porous matrix blocks.
1 Homogeneous Media Macroscopic Scale The law of effective stresses is defined at the macroscopic scale, including a representative volume of solid material and aggregate intergranular forces into an overall magnitude. Effective stresses govern the magnitude of induced strains through the modulating influence of the elastic constants. Effective stresses that modulate deformations and strains are defined relative to total stresses that are required to define equilibrium through knowledge of pore fluid pressures.