Initial Values
Use this node to specify the Initial Values of the electrolyte potential and the electric potential for the solver.
For many electrochemical problems that use nonlinear electrode kinetics, such as Butler-Volmer kinetics, providing reasonable initial values can significantly improve solver convergence.
A good value for the Electric potential (SI unit: V) in electrode and porous electrode domains can usually be derived from the boundary conditions. For instance, if a boundary has been grounded or set to a cell potential, use that value as the initial value also in the adjacent domain. For the Electrolyte potential (SI unit: V) a good initial value is often the negative of the equilibrium potential of the grounded electrode.
Note: For Primary current distributions, or for models solved using a Current Distribution Initialization study step set to Primary, the settings of this section usually have limited impact on the solver convergence.