Stress effects on nuclide transport in fractured rocks: A numerical study

2010 ◽  
pp. 803-806
Keyword(s):  
Fractured Rocks ◽  
Numerical Study ◽  
Stress Effects ◽  
Nuclide Transport

Numerical modeling of stress effects on solute transport in fractured rocks

2011 ◽  
Vol 38 (2) ◽  
pp. 113-126 ◽  
Author(s):  
Zhihong Zhao ◽  
Lanru Jing ◽  
Ivars Neretnieks ◽  
Luis Moreno
Keyword(s):  
Numerical Modeling ◽  
Solute Transport ◽  
Fractured Rocks ◽  
Stress Effects

scholarly journals Numerical study for reliability assessment of a corroding pipe to flange weld joint over its lifetime

2021 ◽  
Vol 41 (1) ◽  
Author(s):  
Mourad Nahal ◽  
Abdelaziz Lakehal ◽  
Rabia Khelif
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Weld Joint ◽  
Numerical Study ◽  
Reliability Assessment ◽  
Welding Process ◽  
Stress Effects ◽  
Corrosion Rates ◽  
Welded Connection ◽  
Stress Models

Numerical model of a corroded weld joint connecting pipe to flange using a finite element method was developed, and coupled with usual stress models. The structure material has been characterized experimentally. Monte Carlo simulations, FORM and SORM methods have been applied for estimating reliability and failure probability under corrosion and residual stress effects. A numerical case with various corrosion rates was conducted to determine the reliability of the welded connection pipe to flange. The obtained results show that the heat affected zone is very sensitive to corrosion effects due to the welding process.

scholarly journals Numerical study of fluid flow of deforming fractured rocks using dual permeability model

2002 ◽  
Vol 151 (2) ◽  
pp. 452-468 ◽  
Author(s):  
Xing Zhang ◽  
David J. Sanderson ◽  
Andrew J. Barker
Keyword(s):  
Fluid Flow ◽  
Fractured Rocks ◽  
Numerical Study ◽  
Permeability Model

Reflection coefficients of fractured rocks: A numerical study

2004 ◽  
Author(s):  
Oliver S. Krüger ◽  
Erik H. Saenger ◽  
Stefan Buske ◽  
Serge A. Shapiro
Keyword(s):  
Fractured Rocks ◽  
Numerical Study ◽  
Reflection Coefficients

Intrinsic stress effects on the growth of planar SiO2 films

1999 ◽  
Vol 14 (12) ◽  
pp. 4508-4513 ◽  
Author(s):  
T. J. Delph ◽  
M-T. Lin
Keyword(s):  
Thin Films ◽  
Diffusion Equation ◽  
Layer Thickness ◽  
Diffusion Coefficients ◽  
Diffusion Rate ◽  
Numerical Study ◽  
Stress Gradient ◽  
Additional Term ◽  
Intrinsic Stress ◽  
Stress Effects

We report here on the results of a numerical study on the effects of intrinsic stress on the growth of SiO2 thin films. In accordance with a widely accepted model of stress effects upon silicon oxidation, we assume that the intrinsic stress affects only the oxidant diffusion rate. We examine several different models of stress-assisted diffusion. In the first of these models, the diffusivity is taken to be an exponential function of the stress, whereas in the second, the stress gradient appears as an additional term in the standard diffusion equation. Intrinsic stress effects result in deviations of up to 18% in expected layer thickness, depending upon the mode of oxidation and the diffusion model adopted. The implications of these results for the measurement of diffusion coefficients in SiO2 films are discussed.

scholarly journals Fracture Unclogging: A Numerical Study of Seismically Induced Viscous Shear Stresses in Fluid‐Saturated Fractured Rocks

2019 ◽  
Vol 124 (11) ◽  
pp. 11705-11727 ◽  
Author(s):  
Nicolás D. Barbosa ◽  
Jürg Hunziker ◽  
Simón Lissa ◽  
Erik H. Saenger ◽  
Matteo Lupi
Keyword(s):  
Fractured Rocks ◽  
Numerical Study ◽  
Shear Stresses ◽  
Viscous Shear
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