When fluid through electrod. The temperature rise due to joule heating can be seen that the density of the heat flux is quite large in area electrod is due to the difference of temperature increase .
When the temperature of the flowing electrod higher is because the Joule Heating is Heat Flux density is quite high in the area because the electrod difference of temperature rise .
When the electrod will flow through a high temperature due to Joule Heating Heat Flux apparently there is quite a lot of density in the electrod is because of the difference of the temperature increase