Hi,

I added a new substance to WAQ and made it non-water-transportable (substance ID: Veg, in attachment). But when I checked the monitor file (.mon file), I found boundary outflow (attachment). I don't understand that. Why does an untransportable substance have a boundary outflow? As I understand it, such substances should only participate in local processes and not move through space.

And by the way, in terms of the columns, why isn't the total mass flow equal to the sum of the other terms?

I would appreciate your help.

Regards,
Zhen