Flow transfer from a subdomain to a non-connected different subdomain

Hi,

From the streamlines/pathlines of a flow simulation I can se that part of the water that reaches a specific area of the model comes from a tailing dam and the rest comes from a waste dump. As both of them are far from that specific area, I can´t use the masking domain.

Is there any other way I could quantify [u]how much of water comes from each of those areas[/u] ?

Thanks.

You'd have to run a transport simulation, marking the water coming from one of the sources by a fake concentration, e.g. 100 mg/l. The concentration in the target area then corresponds to the percentage of the water from the marked source.

Thanks a lot, Peter.
I will give it a try.
Do you think a [u]observation point [/u] would be the better option to check that concentration in target area?

An observation point would be one option. Depending on what you want to know, you could also think about doing the statistics over a volume, plot distributions, look at cross-sections, etc.

thanks again, my friend. and I think, as it is not the objective, that I could treat the transport simulation just as an advection-only problem, right?
I will set a BC type 1 for that concentration at the source and check the evolution of the concentrations along the model domain, as I understood by what you´ve said.