NDLI: Numerical modeling of corrosion pit propagation using the combined extended finite element and level set method

Content Provider	Springer Nature Link
Author	Duddu, Ravindra
Copyright Year	2014
Abstract	A sharp-interface Eulerian formulation for modeling the propagation of localized pitting corrosion is presented. This formulation allows for an accurate representation of the corrosion front independent of the underlying finite element mesh and handles complex morphological transitions such as pit merging without requiring remeshing or mesh-moving procedures. First, the governing equations of the moving interface problem associated with pit growth are derived for the two-phase (metal-solution) system. Next, the implementation of the combined extended finite element and level set method and the procedure to enforce interface conditions are discussed. Finally, the method is validated by conducting several benchmark numerical studies, and comparing the results with published experimental data and existing numerical studies. Simulation studies indicate that: during diffusion-controlled corrosion an isolated pit grows as a semi-circular shape, whereas closely spaced pits merge and grow into an elongated elliptical shape; and only during activation-controlled corrosion the initial pit morphology is preserved.
Starting Page	613
Ending Page	627
Page Count	15
File Format	PDF
ISSN	01787675
Journal	Computational Mechanics
Volume Number	54
Issue Number	3
e-ISSN	14320924
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-04-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Pitting corrosion XFEM Level sets Moving interface Interface constraints Theoretical and Applied Mechanics Computational Science and Engineering Classical Continuum Physics
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Ocean Engineering Computational Theory and Mathematics Mechanical Engineering Computational Mechanics Computational Mathematics

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