Enter a value or expression for the species mass flux J0. Use a minus sign when specifying a flux directed out of the system.
Set Flux type to
External convection to prescribe a flux to or from an exterior domain (not modeled) assumed to include convection. The exterior can for example include a forced convection to control the temperature or to increase the mass transport. In this case the prescribed mass flux corresponds to
where kc is a mass transfer coefficient and
cb is the bulk concentration, the typical concentration far into the surrounding exterior domain.
