Coupled Large Strain Consolidation and Solute Transport. I: Model Development

摘要: The development of a numerical model, CST1, for coupled large strain consolidation and solute transport in saturated porous media is presented. algorithm one-dimensional includes the capabilities previous code, CS2, with addition time-dependent loading, unload/reload effects, an externally-applied hydraulic gradient. two-dimensional accounts advection, longitudinal transverse dispersion, first-order decay reactions, linear equilibrium sorption. Solute consistent temporal spatial variations porosity seepage velocity consolidating layer. key to model definition two Lagrangian fields elements that follow motions fluid solid phases separately. This reduces dispersion simplifies calculations mass flow between contiguous elements. effect relative resolution on accuracy sorption/desorption also discussed. paper presents theoretical CST1 model. A companion verification checks results simulations illustrate significance consolidation-induced some interesting numeric examples.