Electrodeposition Module Updates
For users of the Electrodeposition Module, COMSOL Multiphysics® version 5.3a brings a new feature for defining reactions on a thin electrode and two new corrosion tutorials. Read more about the electrodeposition news below.
New Thin Electrode Surface Node
The Thin Electrode Surface feature can be used to define electrode reactions occurring on a thin electrode that is fully immersed in electrolyte. The electrode is assumed to be infinitely thin, and is only applicable to internal boundaries of electrolyte domains. This can be used as an alternative to drawing the actual electrode domain in the model geometry, which can significantly reduce meshing and solver time, especially in 3D models. You can typically use this feature to model electrodeposition or corrosion processes occurring on thin sheets of metal.
The thin cathode in the Car Door tutorial in the Electrodeposition Module Application Library is now defined using the new Thin Electrode Surface feature.The thin cathode in the Car Door tutorial in the Electrodeposition Module Application Library is now defined using the new Thin Electrode Surface feature.
Revamped Free and Porous Media Flow Interface
With the new version of the Free and Porous Media Flow interface, you can couple laminar or turbulent free flow with porous media flow. This interface remains unique in its coupling with the electrochemistry interfaces for the modeling of porous electrodes.
Kozeny-Carman Permeability Model
The Kozeny-Carman permeability model, available for the Darcy's Law interface in COMSOL Multiphysics® version 5.3a, allows you to estimate the permeability of granular media from the porosity and particle diameter.
New Tutorial Model: Level-Set Interface for Cu Deposition in a Trench
The Level Set interface has now been added to the Electrodeposition Module for modeling electrodeposition problems where the topology of the depositing electrode surface changes as a result of the deposition processes.
A concentration animation showing the entrapment of a pocket of electrolyte inside the deposited layer during copper deposition. The Level Set interface is used to dynamically track the moving interface between the electrode and electrolyte phases.
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New Tutorial Model: Aluminum Anodization
Anodization is a surface treatment technique for creating abrasive and corrosion-resistant oxide films on aluminum. In the Aluminum Anodization tutorial, experimental polarization data is used to model the current distribution and resulting oxide layer thickness on a number of extruded aluminum profiles in an anodization cell.
Normalized current density distribution on aluminium anodes.Normalized current density distribution on aluminium anodes.
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