The Electroanalysis (elan) interface (
), found under the
Electrochemistry branch (
) when adding a physics interface, has the equations, boundary conditions, and rate expression terms for modeling mass transport of diluted species in electrolytes using the diffusion-convection equation, solving for electroactive species concentration(s). The physics interface contains tailor-made functionality for modeling cyclic voltammetry and electrochemical impedance spectroscopy.
The Label is the default physics interface name.
The Name is used primarily as a scope prefix for variables defined by the physics interface. Refer to such physics interface variables in expressions using the pattern
<name>.<variable_name>. In order to distinguish between variables belonging to different physics interfaces, the
name string must be unique. Only letters, numbers, and underscores (_) are permitted in the
Name field. The first character must be a letter.
The default Name (for the first physics interface in the model) is
elan.
For 2D components, the Thickness field (default value: 1 m) defines a parameter for the thickness of the geometry perpendicular to the two-dimensional cross section. The value of this parameter is used, among other things, to automatically calculate the total current from the current density vector. The analogy is valid for other fluxes.
For 1D components, the Cross sectional area field (default value: 1 m
2) defines a parameter for the area of the geometry perpendicular to the 1D component. The value of this parameter is used, among other things, to automatically calculate the total current from the current density vector. The analogy is valid for other fluxes.
Diffusion is always included. By default, the Convection and
Migration in electric field check boxes are not selected under
Additional transport mechanisms.