scholarly journals A proposed model for water-salts coupled flow transport equations

2003 ◽  
Vol 37 (5-6) ◽  
pp. 541-547 ◽  
Author(s):  
L Demeio ◽  
D Sani
Keyword(s):  
Transport Equations ◽  
Coupled Flow ◽  
Proposed Model ◽  
Flow Transport

scholarly journals A transient backward erosion piping model based on laminar flow transport equations

2021 ◽  
Vol 132 ◽  
pp. 103992
Author(s):  
Manuel Wewer ◽  
Juan Pablo Aguilar-López ◽  
Matthijs Kok ◽  
Thom Bogaard
Keyword(s):  
Laminar Flow ◽  
Transport Equations ◽  
Model Based ◽  
Flow Transport ◽  
Backward Erosion Piping

A Finite Element Computer Model for the Application of Electrokinetics to Contaminated Land

2003 ◽  
Author(s):  
Simon Kwong ◽  
Alan Paulley ◽  
Alex Bond
Keyword(s):  
Finite Element ◽  
Chemical Speciation ◽  
Three Dimensional ◽  
Computer Code ◽  
Test Cases ◽  
Coupled Flow ◽  
Lagrangian Transport ◽  
Chemical Gradients ◽  
Flow Transport ◽  
Element Approach

The computer code TRAFFIC incorporating three-dimensional (3-D) electrokinetic capabilities, coupled flow, transport and chemical speciation, using a finite element approach has been used to replicate published laboratory scale experiments [1, 2]. Two test cases have been presented using TRAFFIC with chemical speciation options and the Euler-Lagrangian transport formulation. The first of these (Case A with graphite anode) provided useful insights into the capabilities of the code to simulate realistic and complex problems, while the second (Case B with iron anode) closely reproduced the experimental results. It was also shown that the Euler-Lagrangian transport scheme was much better in coping with the steep chemical gradients, whereas the standard Euler scheme is less stable. Given the good results of these test cases, it is concluded that the code has been verified and partially validated.

PERMEABILITY PREDICTION IN ROUGHENED FRACTURES UNDER STRESS CONDITION USING FRACTAL MODEL

Fractals ◽  
2019 ◽  
Vol 27 (03) ◽  
pp. 1950030 ◽  
Author(s):  
GANG LEI ◽  
NAI CAO ◽  
QINGZHI WEN
Keyword(s):  
Stress Condition ◽  
Fractal Model ◽  
Coupled Flow ◽  
Permeability Model ◽  
Microstructural Parameters ◽  
Rough Fracture ◽  
Proposed Model ◽  
Stress Dependent ◽  
Rock Lithology ◽  
Good Agreement

The prediction of permeability in rough fracture under stress condition presents ever more of a challenge in various scientific and engineering fields. However, up to now, the essential controls on stress-dependent permeability of rough fracture are not determined. In order to find a relationship between the microstructure and the permeability of rough fracture, an analytical method for the permeability of roughened fracture under stress condition is proposed based on the fractal model. The validity of the proposed model is obtained by the good agreement between the simulated results and the experimental data. Compared with the previous models, our model takes into account more factors, including the influence of the microstructural parameters of rough fracture and rock lithology. This paper presents that (1) the rock with soft lithology can yield smaller normalized permeability, (2) normalized permeability decreases with the increases of percent of smaller rough elements. The fractal permeability model can reveal more mechanisms that affect the coupled flow deformation behavior in the fractured porous media.

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