Abstract: In the core of an integrated watershed model there is coupling between surface water and subsurface water flows. Recently, interest in hydrology literature, regarding the fully coupled approach for surface and subsurface ...

Abstract: A fully three-dimensional (3D) multiphase flow model (3DMPS) is developed to simulate the migration of three phases (water, non-aqueous phase liquid and gas) using a fractional flow formulation for the governing equations. ...

Abstract: This paper proposes a particle tracking technique for applying the Eulerian–Lagrangian localized adjoint method or the Eulerian–Lagrangian method to solve transport equations in a rapidly changing unsteady flow. The proposed ...

Abstract: The solute transport equation is commonly used to describe the migration and fate of solutes in a groundwater flow system. Depending on the problem nature, the source of the solute may be represented as a point source term ...

Abstract: Typhoon-induced flood and inundation are among the major natural disasters in Taiwan. To understand and mitigate these hydrological hazards, adequate modeling tools on watershed scales are necessary. This paper describes ...

Abstract: To compute groundwater solute transport, the CPU memory requirement can be drastically reduced by using the subregion iteration of the orthogonal-upstream weighting finite element method. The use of an orthogonal-upstream ...

Abstract: This paper presents an adaptive multigrid approach, combining multigrid methods and adaptive local grid refinement, to solve 3D density-dependent flow and transport problems in the subsurface. This approach is incorporated ...

Abstract: It is held self-evident that a watershed is among the best instruments with which to measure the spatial–temporal distribution of precipitation during heavy rainfall periods. Therefore, this paper describes an approach to ...

Abstract: A 2-dimensional finite-element model for density-dependent flow and transport through saturated-unsaturated porous media has been developed. The combined flow and transport model can handle a wide range of real-world ...

Abstract: A series of three-dimensional numerical simulations using a multidimensional hydrodynamic dispersion numerical model was performed to analyze various saltwater extraction schemes for mitigating seawater intrusion attributed ...