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Showing 1 to 12 of 12 for “"Reactive transport models"”.
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Parallel Processing of Reactive Transport Models Using OpenMP
Transport codes are beginning to be parallelized in order to allow more complex add-ons, such as geochemical packages, to utilize finer, more accurate grids, and to reduce solution times making stochastic and Monte Carlo simulations more feasible. Most codes parallelized via MPI (message passing …
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Linkages between fluid flow paths, reactive gases, and chemical weathering across a shale bedrock hillslope
… in combination with laboratory experiments and reactive transport modeling. The VMS allows for the direct observation of chemical and gas signatures in the vadose zone for the comparison of chemical evolution of fluids in lab experimental setting. We sampled water and gases across 18 meters of …
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The Development and Application of Reactive Transport Modeling Techniques to Study Radionuclide Migration at Yucca Mountain, Nevada
… of a repository breach. Performance assessment models used to make these estimations are computationally intensive. We have developed two reactive transport modeling techniques to simulate radionuclide transport at Yucca Mountain: (1) the selective coupling approach applied to the …
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Approximating three-dimensional fluid flow in a microfluidic device with a two-dimensional, depth-averaged lattice Boltzmann method
… (MFDs) are important tools in the study of reactive transport processes in porous media. Laboratory and numerical experiments have studied reactions such as bimolecular complexation, biodegradation and biofilm growth, and mineral precipitation coupled to fluid flow in MFDs that are shallow …
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Quantifying the impacts of exogenous dust inputs to watersheds using reactive transport modeling
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Numerical Modeling and Simulation of Mineral Dissolution in Fractured Carbonate Formations
… plays important role in many subsurface transport processes including waterflooding, geological CO2 sequestration (GCS), and matrix acidizing in carbonate formations. Such a dissolution process could form the preferential pathways to cause a failure of waterflooding and GCS due to the …
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Modeling, analysis and numerical simulation of reactive solute transport problems in moving domains
In this thesis, we study mathematical models and numerical schemes for reactive transport of a soluble substance in deformable media. The medium is a cylindrical channel with compliant adsorbing walls. The solutes are dissolved in a fluid flowing through the channel. The fluid, which carries the …
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Adsorption–Desorption Reactions in the Weathering Zone: Implications for Silicate Weathering & the Carbon Cycle
… of dissolved reaction products (solutes) transported by large rivers. However, this approach may overlook ions chemically bound to the surfaces of sediments, which can be significant in highly erosive regions. To better understand the contribution of the adsorbed phase to chemical …
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Interaction of aqueous U(VI) with goethite, montmorillonite, and UO2(s)
… of great concern throughout the world. Fate and transport of uranium in the subsurface can be controlled by U(VI) adsorption and reduction onto common iron (oxy)hydroxides and clay minerals. Aqueous U(VI) can also exchange uranium atoms with solids comprised of uranium which can potentially lead …
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Developing Multi-Scale Models for Water Quality Management in Drinking Water Distribution Systems
… interactions that take place as the water transports through the pipes of the distribution system and inside premise plumbing. These interactions include the decay of disinfectant residuals, the formation of disinfection by-products (DBPs), the corrosion of pipe materials, and the growth …
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COMBINING GEOCHEMICAL AND NUMERICAL MODELING FOR CHLORINATED SOLVENTS GROUNDWATER CONTAMINATION
… if and how bioremediation is carried out. Reactive transport models (RTMs) are suitable tools to assist decision makers when designing and monitoring bioremediation efficiency. To date, no applications to SBSs have been reported, possibly owing to the relative novelty of SBS and to the …
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Chemistry of Nanoscale Solids and Organic Matter in Sustainable Water Management Systems
… constituents, including cations and anions, reactive radical species, and organic matter? (2) How can our current knowledge enable more stable, scalable, and sustainable nanomaterial-based technologies for next-generation water treatment? To seek answers to these two questions, this …