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Book Advances in Groundwater Flow and Solute Transport Pushing the Hidden Boundary

Download or read book Advances in Groundwater Flow and Solute Transport Pushing the Hidden Boundary written by Hongbin Zhan and published by MDPI. This book was released on 2019-10-01 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, the study of groundwater flow and solute transport has advanced into new territories that are beyond conventional theories, such as Darcy’s law and Fick’s law. The studied media have changed from permeable porous and fractured ones to much less permeable ones, such as clay and shale. The studied pore sizes have also changed from millimetres to micro-meters or even nano-meters. The objective of this Special Issue is to report recent advances in groundwater flow and solute transport that push the knowledge boundary into new territories which include, but are not limited to, flow and transport in sloping aquifer/hillslopes, coupled unsaturated and saturated flow, coupled aquifer-vertical/horizontal/slant well flow, interaction of aquifer with connected and disconnected rivers, non-Darcian flow, anomalous transport beyond the Fickian scheme, and flow and transport in extremely small pore spaces such as shale and tight sandstones. Contributions focusing on innovative experimental, numerical, and analytical methods for understanding unconventional problems, such as the above-listed ones, are encouraged, and contributions addressing flow and transport at interfaces of different media and crossing multiple temporal and spatial scales are of great value

Book Advances in Groundwater Flow and Solute Transport Pushing the Hidden Boundary

Download or read book Advances in Groundwater Flow and Solute Transport Pushing the Hidden Boundary written by Quanrong Wang and published by . This book was released on 2019 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, the study of groundwater flow and solute transport has advanced into new territories that are beyond conventional theories, such as Darcy's law and Fick's law. The studied media have changed from permeable porous and fractured ones to much less permeable ones, such as clay and shale. The studied pore sizes have also changed from millimetres to micro-meters or even nano-meters. The objective of this Special Issue is to report recent advances in groundwater flow and solute transport that push the knowledge boundary into new territories which include, but are not limited to, flow and transport in sloping aquifer/hillslopes, coupled unsaturated and saturated flow, coupled aquifer-vertical/horizontal/slant well flow, interaction of aquifer with connected and disconnected rivers, non-Darcian flow, anomalous transport beyond the Fickian scheme, and flow and transport in extremely small pore spaces such as shale and tight sandstones. Contributions focusing on innovative experimental, numerical, and analytical methods for understanding unconventional problems, such as the above-listed ones, are encouraged, and contributions addressing flow and transport at interfaces of different media and crossing multiple temporal and spatial scales are of great value.

Book Subsurface Solute Transport Models and Case Histories

Download or read book Subsurface Solute Transport Models and Case Histories written by Vyacheslav G. Rumynin and published by Springer Science & Business Media. This book was released on 2011-07-21 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book addresses the development of the basic knowledge of the subsurface solute transfer with a particular emphasis on field data collection and analysis coupled with modeling (analytical and numerical) tool application. The relevant theoretical developments are concerned mainly with the formulation and solution of deterministic mass-transport equations for a wide range of engineering issues in groundwater quality assessment and forecasting. The book gives many computational examples and case studies drawn from the conducted field investigations. The analyzed problems are as follows: investigation and prediction of groundwater contamination by industrial contaminants and solutions (radionuclides, chloride and nitrate brine) with special focus on the effect of (a) aquifer heterogeneity, anisotropy, and dual porosity, (b) density contrast existing between industrial waste and groundwater, or in density-stratified artesian and coastal groundwater systems; (c) physicochemical interactions that play a major role in retarding (e.g. adsorption) or enhancing (e.g. interactions between dissolved species and mobile colloids) contaminant transport; prediction of the effects of pumping on groundwater quality at wellfields; groundwater dating using stable and radioactive isotopes for prediction and assessment of contamination potential; field and laboratory tests’ design and analysis, and monitoring data interpretation; partitioning of surface and subsurface flows using isotope techniques. One of the most essential topics addressed in the book is the migration and fate of radionuclides. Model development is motivated by field data analysis from a number of radioactively contaminated sites in the Russian Federation: near-surface radioactive waste disposal sites and deep-well radioactive waste injection sites. They play a unique role in the advancement of knowledge of the subsurface behavior and fate of many hazardous radionuclides and can be considered as field-scale laboratories. Thus, the book, along with theoretical findings, contains field information, which will facilitate the understanding of subsurface solute transport and the development of a methodology for practical applications to groundwater hydrology.

Book Analytical Solutions for One Two and Three dimensional Solute Transport in Ground water Systems with Uniform Flow

Download or read book Analytical Solutions for One Two and Three dimensional Solute Transport in Ground water Systems with Uniform Flow written by Eliezer J. Wexler and published by . This book was released on 1992 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Practical Guide to Groundwater and Solute Transport Modeling

Download or read book A Practical Guide to Groundwater and Solute Transport Modeling written by Karlheinz Spitz and published by Wiley-Interscience. This book was released on 1996-04-12 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on modeling applications, this outstanding reference provides a step-by-step, non-mathematical approach to constructing and using realistic workable groundwater models on a daily basis. Extensive detailed drawings, case studies, practical examples, and sample models illustrate important concepts. Includes data on hydrogeologic features and pollutants plus a glossary of terms.

Book Groundwater Flow and Solute Transport in Fractured Media

Download or read book Groundwater Flow and Solute Transport in Fractured Media written by P. A. Lapcevic and published by . This book was released on 1999 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Applied Groundwater Modeling

Download or read book Applied Groundwater Modeling written by Mary P. Anderson and published by Academic Press. This book was released on 1992-02-03 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Creating numerical groundwater models of field problems requires careful attention to describing the problem domain, selecting boundary conditions, assigning model parameters, and calibrating the model. This unique text describes the science and art of applying numerical models of groundwater flow and advective transport of solutes. Key Features * Explains how to formulate a conceptual model of a system and how to translate it into a numerical model * Includes the application of modeling principles with special attention to the finite difference flow codes PLASM and MODFLOW, and the finite-element code AQUIFEM-1 * Covers model calibration, verification, and validation * Discusses pathline analysis for tracking contaminants with reference to newly developed particle tracking codes * Makes extensive use of case studies and problems

Book Groundwater Flow and Solute Transport Modeling at a State Superfund Site

Download or read book Groundwater Flow and Solute Transport Modeling at a State Superfund Site written by Glenn Lowell Evavold and published by . This book was released on 1992 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Conceptualization of Groundwater Flow and Solute Transport Processes at a Field Site in the Price River Basin

Download or read book Conceptualization of Groundwater Flow and Solute Transport Processes at a Field Site in the Price River Basin written by Sanjay Rasiklal Sangani and published by . This book was released on 1985 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A New Direct Inverse Method of Groundwater Flow and Solute Transport

Download or read book A New Direct Inverse Method of Groundwater Flow and Solute Transport written by Jianying Jiao and published by . This book was released on 2022 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Groundwater is the largest accessible source of drinking water and water for irrigation. With increasing population and economic development, the demand for drinking water and water for irrigation is increasing. Therefore, the water table map, groundwater depletion, and solute transport in the shallow groundwater are very significant to humanity and ecosystems. Because observations of the water table and concentrations are rare, the maps of the accurate water table, groundwater depletion, and concentrations are difficult to obtain in the local regions and around the globe. This dissertation addresses how to solve these problems, estimating maps of the water table, groundwater depletion, and concentration in local and continental regions. Because the inverse method is one of the more extensive and effective methods for solving these problems, the inverse method was used in our study. However, the traditional inverse method requires a forward model including boundary and initial conditions. Uncertainty of boundary and initiation conditions leads to large uncertainty of inverted results. According to issues of the traditional inverse method, in the dissertation, we proposed a new direct inverse method that does not require boundary and initial conditions. First, this method was used to estimate maps of the water table and groundwater depletion in the High Plain Aquifer and the continental US. Results show that the water table of the Texas High Plain Aquifer declined 0.5 meters per year from 2000 which is consistent with observations. Expanding from local regions to the continental US, the inverted water table map and standard deviation map in the continental US were presented. Second, we used our inverse method to estimate the groundwater depletion in the continental US and compared our inverted results with data from the Gravity Recovery and Climate Experiment (GRACE) and groundwater withdrawals from USGS. Then, to identify contaminant trajectory and source in a non-uniform flow field, this study proposes a new inverse method by developing local approximate solutions (LAS) of concentration and by conditioning them to measure breakthrough concentrations. The key difference between this new approach and the majority of existing inversion techniques is that standard regression techniques are not employed. Thus, a solute transport forward model does not need to be built and simulated to optimize a model-data mismatch, as a result, non-uniqueness in inversions that is due to an incorrect assumption of transport BC is eliminated. To verify the solute transport inverse method, A series of bromide tracer experiments were performed in an intermediate-scale two-dimensional laboratory soil testbed. The resulting concentration breakthrough measurements, made at increasing monitoring well densities, were used to validate this method that can identify leakage sources and pathways under unknown initial and boundary conditions.

Book Groundwater Flow and Solute Transport Modelling

Download or read book Groundwater Flow and Solute Transport Modelling written by and published by . This book was released on 1999 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: