Unsaturated soil behavior Water retention behavior and hydraulic properties Preferential flow and mass transport modeling in a heterogeneous unsaturated soil

2013 ◽  
pp. 229-234 ◽  
Keyword(s):  
Mass Transport ◽  
Unsaturated Soil ◽  
Hydraulic Properties ◽  
Water Retention ◽  
Preferential Flow ◽  
Transport Modeling ◽  
Retention Behavior ◽  
Soil Behavior ◽  
Mass Transport Modeling ◽  
Flow And Mass Transport

scholarly journals Diffusion as the main process for mass transport in very low water content argillites: 2. Fluid flow and mass transport modeling

2004 ◽  
Vol 40 (1) ◽  
Author(s):  
Delphine Patriarche ◽  
Emmanuel Ledoux ◽  
Jean-Luc Michelot ◽  
Régine Simon-Coinçon ◽  
Sébastien Savoye
Keyword(s):  
Fluid Flow ◽  
Mass Transport ◽  
Water Content ◽  
Transport Modeling ◽  
Main Process ◽  
Mass Transport Modeling ◽  
Flow And Mass Transport

Three-dimensional mass transport modeling of pharmaceuticals adsorption inside ZnAl/biochar composite

2021 ◽  
Vol 614 ◽  
pp. 126170
Author(s):  
Jaime Moreno-Pérez ◽  
Paola S. Pauletto ◽  
Anaelise M. Cunha ◽  
Ádrian Bonilla-Petriciolet ◽  
Nina P.G. Salau ◽  
...  
Keyword(s):  
Mass Transport ◽  
Three Dimensional ◽  
Transport Modeling ◽  
Mass Transport Modeling

Mass Transport Modeling in a Gas Antisolvent Process

2004 ◽  
Vol 43 (16) ◽  
pp. 4935-4943 ◽  
Author(s):  
Nicola Elvassore ◽  
Federico Cozzi ◽  
Alberto Bertucco
Keyword(s):  
Mass Transport ◽  
Transport Modeling ◽  
Mass Transport Modeling ◽  
Gas Antisolvent

Method for Quick Prediction of Hydraulic Conductivity and Soil-Water Retention of Unsaturated Soils

2018 ◽  
Vol 2672 (52) ◽  
pp. 108-117 ◽  
Author(s):  
Shaoyang Dong ◽  
Yuan Guo ◽  
Xiong (Bill) Yu
Keyword(s):  
Finite Element ◽  
Hydraulic Conductivity ◽  
Soil Properties ◽  
Soil Water ◽  
Unsaturated Soil ◽  
Unsaturated Soils ◽  
Hydraulic Properties ◽  
Water Retention ◽  
Characteristic Curve ◽  
Soil Water Retention

Hydraulic conductivity and soil-water retention are two critical soil properties describing the fluid flow in unsaturated soils. Existing experimental procedures tend to be time consuming and labor intensive. This paper describes a heuristic approach that combines a limited number of experimental measurements with a computational model with random finite element to significantly accelerate the process. A microstructure-based model is established to describe unsaturated soils with distribution of phases based on their respective volumetric contents. The model is converted into a finite element model, in which the intrinsic hydraulic properties of each phase (soil particle, water, and air) are applied based on the microscopic structures. The bulk hydraulic properties are then determined based on discharge rate using Darcy’s law. The intrinsic permeability of each phase of soil is first calibrated from soil measured under dry and saturated conditions, which is then used to predict the hydraulic conductivities at different extents of saturation. The results match the experimental data closely. Mualem’s equation is applied to fit the pore size parameter based on the hydraulic conductivity. From these, the soil-water characteristic curve is predicted from van Genuchten’s equation. The simulation results are compared with the experimental results from documented studies, and excellent agreements were observed. Overall, this study provides a new modeling-based approach to predict the hydraulic conductivity function and soil-water characteristic curve of unsaturated soils based on measurement at complete dry or completely saturated conditions. An efficient way to measure these critical unsaturated soil properties will be of benefit in introducing unsaturated soil mechanics into engineering practice.

Thermodynamic Heat Transfer and Mass Transport Modeling of the Sublimation Growth of Silicon Carbide Crystals

1996 ◽  
Vol 143 (11) ◽  
pp. 3727-3735 ◽  
Author(s):  
M. Pons ◽  
E. Blanquet ◽  
J. M. Dedulle ◽  
I. Garcon ◽  
R. Madar ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Silicon Carbide ◽  
Mass Transport ◽  
Transport Modeling ◽  
Mass Transport Modeling ◽  
Sublimation Growth
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