I've been reading about fluid subdomains and I have understood how to create them and how to edit their parameters but I have still one question left.
In my case (a heat exchanger) I define both subdomains. One would be water and the other one will be a mixture of gases which I define by setting 34% of air, 33% of methane, 20% of methane and 13% of Nitrogen. Then in the LIDs inlets I would have to set again that from one is entering water and from the second one I repeat and enter again that mixture...
So, what difference would it be if I simply entered the parameters for the inlets without creating the fluid subdomains?
(It is useful for me because it helps me to see if both subdomains are isolated, but that's all, after that I erase them).
Thanks in advance