TABLE I.

Boundary conditions applied in numerical simulation.

Index	Boundary	B.C. for electrical problem ${\nabla }^2\tilde{\varphi }=0$
1	Electrode of 0° voltage	$\tilde{\varphi }=A$
2	Electrode of 90° voltage	$\tilde{\varphi }=jA$
3	Electrode of 180° voltage	$\tilde{\varphi }=-A$
4	Electrode of 270° voltage	$\tilde{\varphi }=-jA$
5	Squared floating electrode	$\sigma \mathit{n}\cdot \nabla \tilde{\varphi }=j\omega C_0(\tilde{\varphi }-\widetilde{{\varphi }_0})$, $\widetilde{{\varphi }_0}=0$
6	Insulating wall/electrolyte interface	$\mathit{n}\cdot \nabla \tilde{\varphi }=0$