[aspect-devel] questions about heat flux output

[Max Rudolph]

Paul,
I would add to what Wolfgang said in that you are asking about 'heat flux'
which is heat flow per unit area, expressed in W/m^2 or mW/m^2 generally.
What informs your expectation for a 'higher' value for the heat flow? Are
you trying to reproduce a benchmark or other value from the literature?
Without more information about the model setup and the basis for your
expected value, it's hard for the people on this list to assist you.

All the best,
Max

On Thu, Sep 29, 2016 at 11:24 AM, Bremner,Paul M <pbremner at ufl.edu> wrote:

> Dear All,
>
>
> I'm new to ASPECT, and I've been running the cookbook parameter files to
> get started. I'm sure this is very basic, but while running the
> shell_simple_2d.prm I noticed that the heat flux values through the inner
> and outer boundaries are only in the megawatts range, and the inner
> boundary even has a negative value, and this appears at every time step.
> The final animation of the temperature parameter from the solutions files
> look completely normal, though. In the case of the shell_simple_2d.prm, the
> inner and outer boundaries have fixed temperatures, 4273K and 973K,
> respectively, and the inner boundary is a rigid surface.
>
>
> My question is; what do these values actually represent? They seem too
> small (and the negative values seem strange) to be the actual heat flux
> values. Are these perturbation values, or are the units not what I think
> they are?
>
>
> Thank you in advance,
>
> Paul Bremner
>
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