3. Results and discussion
3.1. Results of electric field magnitude estimation
For the proposed simulation parameters, estimated electric field magnitude exhibits gradual decline in intensity and more homogenous distribution with the increase of the distance from the electrodes (Fig. 2 (b), (c) and (d)). Estimated maximum value of the electric field magnitude is 1.1 kVm− 1, while the minimum value approaches zero at the beaker walls. Mean value of the electric field magnitude is 97.5 Vm− 1. Although the electric field magnitude and distribution are practically temperature independent, magnitude of the electric current driving the ionic flow increases with temperature due to the rise in electrolyte conductivity. The estimated values of the electric current for different temperatures in comparison with the experimentally measured values are shown in Table 2. The overestimation of the electric current values can be mainly attributed to the neglected contribution of the electric double layer and the imperfections of electrode surfaces. The relative error of the electric current estimation decreases as the electrolyte conductivity increases. The average electric field strength is also overestimated to a similar degree due to the linear relation between the electric field strength and current density when Je = 0 and negligible size of the electric double layer compared to the size of the entire model volume.