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RISEfficient Approach to Solving Transient Unsaturated Flow Problems. II: Numerical Solutions
Publisher: American Society of Civil Engineers
Abstract: Although the finite-difference method (FDM) has been commonly used to numerically solve Richard’s equation, numerical difficulties are often encountered, even for comparatively simple problems. To minimize convergence ...
Efficient Approach to Solving Transient Unsaturated Flow Problems. I: Analytical Solutions
Publisher: American Society of Civil Engineers
Abstract: Richard’s equation governs the migration of moisture in the soil under unsaturated conditions. Although this differential equation provides a rigorous approach to simulating important infiltration problems, obtaining ...
Stochastic Foundation to Solving Transient Unsaturated Flow Problems Using a Fractional Dispersion Term
Publisher: ASCE
Abstract: Mathematical modeling of unsaturated water seepage through soils uses the core concepts of continuum mechanics. More precisely, it combines the continuum mass balance equation and Darcy–Buckingham Law into the Richards ...
Integral and Closed-Form Analytical Solutions to the Transport Contaminant Equation Considering 3D Advection and Dispersion
Publisher: American Society of Civil Engineers
Abstract: Even though numerical procedures have been tremendously enhanced over the last years, analytical closed-form solutions are of special interest to water resources scientists. In general, these solutions are used to check ...
Novel Approach to Determine Soil–Water Retention Surface
Publisher: ASCE
Abstract: Models have been developed to represent soils, thereby establishing the unsaturated soil theory. Accurate models include physical deductions based on soil properties. The soil–water retention surface (SWRS) represents the ...
Bimodal Soil–Water Retention Curve and <i>k</i>-Function Model Using Linear Superposition
Publisher: ASCE
Abstract: Progress in the study of unsaturated soils and their application in practical geotechnics could be partially attributed to the advancement of their modeling and computational technologies. The soil–water retention curve ...
Coupled Kinetics Adsorption–Desorption Model Applied to Batch Tests
Publisher: ASCE
Abstract: Batch tests are extensively used in a wide range of fields, including environmental engineering, to forecast the impact of sorption on contaminant transportation in soil and wastewater treatment effectiveness. Recently, ...
Bayesian-Optimized Physics-Informed Deep Autoencoders for Efficient Calibration of Geotechnical Constitutive Models: A NorSand Case Study
Publisher: American Society of Civil Engineers
Abstract: AbstractRecent advancements in deep learning have revolutionized constitutive model calibration
in geotechnical engineering by automatically identifying complex patterns in high-dimensional
data, enhancing accuracy, and ...
Geometric Features and Fractal Nature of Soil Analyzed by X-Ray Microtomography Image Processing
Publisher: American Society of Civil Engineers
Abstract: One of the most basic topics in soil mechanics is the geometrical features of the particles and the soil arrangement. Although these features are of high relevance, many definitions and processes used to evaluate them are ...