Computational Subsurface Hydrology
Reactions, Transport, and Fate
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Article
3D hybrid mesh generation with an improved vertical stretch algorithm for geometric models with pinch-out features
Aiming at the infeasibility of using quadrilateral-prisms to describe sharp shapes, an improved vertical stretch algorithm was proposed to generate three-dimensional (3D) hybrid meshes based on the quadrilater...
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Article
An automatic quadrilateral mesh generation algorithm applied to 2-D overland flow simulations
This paper presents an automatic quadrilateral mesh generation algorithm to provide 2-D meshes for simulating overland flow and transport problems in watershed systems. The conformal map** method is studied ...
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Article
Using a characteristic-based particle tracking method to solve one-dimensional fully dynamic wave flow
The theoretical behavior of a one-dimensional (1-D) open-channel flow is embedded in the Saint-Venant equation, which is derived from the Navier–Stokes equations. The flow motion is described by the momentum e...
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Article
Engineering applications of 2D and 3D finite element mesh generation in hydrogeology and water resources
This paper develops an automatic density-controlled 2-D and 3-D finite element mesh generation system to solve practical engineering applications in geology, hydraulics, hydrology, water resources, etc. The De...
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Article
Automatic quadrilateral mesh generation and quality improvement techniques for an improved combination method
This paper developed an automatic quadrilateral meshing system to resolve the numerical simulation problems in the fields of geological mechanics, hydraulics, hydrology, and water resources. An improved combin...
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Article
Numerical modeling of coupled fluid flow and thermal and reactive biogeochemical transport in porous and fractured media
Subsurface contamination problems of metals and radionuclides are ubiquitous. Metals and radionuclides may exist in the solute phase or may be bound to soil particles and interstitial portions of the geologic ...
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Article
Multiphase flow modeling with general boundary conditions and automatic phase-configuration changes using a fractional-flow approach
The multiphase flow simulator moving particle semi-implicit (MPS) method is developed based on the fractional-flow approach, originated in the petroleum engineering literature, considering the fully three-phas...
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Book
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Article
On simulating reactive chemical transport with dominating precipitated species controlling chemical equilibrium
We present an approach developed to compute chemical equilibrium and its corresponding reactive chemical transport when dominating precipitated species (DPS) exist. In computing chemical equilibrium, most mode...
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Chapter and Conference Paper
On Diagonalization of Coupled Hydrologic Transport and Geochemical Reaction Equations
Two basic ingredients present in modeling the transport of reactive multi-components: the transport is described by a set of advection-dispersion-reactive partial differential equations (PDEs) based on the pri...
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Chapter
A Systematic Approach for Assessment of Alternative Nuclear Waste Management Strategies
A systematic approach for alternative nuclear waste management assessment is prescribed for evaluating the fate and transport of radwaste in the environment and to man. The approach consists of a system of flo...
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Article
Reply
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Article
Three-dimensional air pollutant modeling in the lower atmosphere
A steady-state, three-dimensional turbulent diffusion equation describing the concentration distribution of an air pollutant from an elevated point source in the lower atmosphere is solved analytically. The sa...
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Article
Interaction between the atmospheric and oceanic boundary layers
The two-layer system of an atmosphere over water bodies is reduced to a single-layer problem. Values of the interfacial quantities, such as the friction velocity, the surface velocity, the angles, α and β, bet...
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Article
A solution for simultaneous turbulent heat and vapor transfer between a water surface and the atmosphere
Interaction between sensible heat and water vapor diffusion in the lower atmosphere leads to the necessity of solving two simultaneous turbulent diffusion equations. This solution is obtained by the constructi...
