Icepak: determination of energy

[DrBiff]

So my convergence criterion has been questioned when using IcePak. I can show that mass flow in equals mass flow out, but my boss wants to see energy in and energy out. I know you can do heat flow in and out, but it doesn't seem to be making sense.

It says 1W flows through the entrance then there is a 100W heats source within the chamber. The exit flow then states that 1W is leaving, shouldn't this be 101W? Walls are default(which I thought was adiabatic). Anybody have any suggestions or need more info to give me some advise?

 

[ivymike]

at steady state, then energy in would equal energy out. If you haven't achieved steady state, then you might be accumulating energy within the container.