[aspect-devel] questions about heat flux

[Bremner,Paul M]

Thanks Wolfgang / Max for the replies.


@ Wolfgang:

I misunderstood the direction at the inner boundary, I now also see it in the manual (my fault for not reading far enough before asking). If the heat flux is always pointing outward, then the negative sign makes perfect sense in this case.


@ Max:

At the moment I'm running the cookbook prm files at the moment in order to verify that things are running well, and to get experience with the process before I move on to new projects. My expectation of higher values are from earth-like 3-d heat flux values where I'd expect to see on the order 10^12 W through the surface. I see only on the order 10^6 W. This may be okay since I'm only in the 2-d case, I have not gone through the math yet, but this seemed low and I wanted to be sure what the output values represented. The units that were output have only watts instead of W/m (again, I'm in the 2-d case), which led me to think it was an integrated value, or total heat flux through the surface. The manual is not clear on this point (note that I haven't read the whole manual yet), where in some places it refers to heat flux in W/m^2 and in other places hints at an integrated value. Should I always interpret these as W per unit? or is there an option for which behavior is output?


Thank you again!

Best,

Paul
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