[aspect-devel] The output of nonadiabatic_temperature

Nan Zhang Nan.Zhang at colorado.edu
Tue Oct 11 10:05:18 PDT 2016

Hi Juliane,

Thanks for your suggestion. What I really want is the excess temperature,
the T subtracted from the average temperature on depth. I have done the
post-processing with the .csv format, because Paraview converts the .vtu
file to .csv file.

My problem is the csv file is not good for paraview plotting anymore.  Paraview
plots csv file with table to point. There is no any smooth/grid between
points. The visualization is very bad. Have you guys done any conversion
from csv back to vtu before??


On Wed, Oct 12, 2016 at 12:53 AM, Juliane Dannberg <dannberg at gfz-potsdam.de>

> Hi Nan,
> there are different options for outputting the temperature difference
> between plume and background mantle, and which one you want to use depends
> on what exactly you want to know:
> If you use the "nonadiabatic temperature", you will get the excess
> temperature of the plume with respect to an adiabatic mantle temperature
> profile. If you are worried your adiabat will change over time, there is an
> update() function in the interface of the adiabatic conditions, so in
> principle you could use an existing model for the adiabatic conditions and
> implement this function, and then your adiabatic profile would be updated
> every time step.
> Alternatively, if you want to compare the plume temperature to the current
> average mantle temperature at a given depth, you can use Aspect's "depth
> average" postprocessor. It computes depth averaged quantities (including
> the temperature) and writes them into a separate output file.
> Best,
> Juliane
> On 10/11/2016 04:23 AM, Nan Zhang wrote:
> Hi all,
> I am doing a compressible model and try to plot the plume structure. The
> plume is defined by the high temperature difference from current average
> temperature at every depth. I see ASPECT has an output "
> nonadiabatic_temperature". I wonder if this output serves my purpose?
> What I concerned is if the adiabatic temperature is not exactly the same
> as my average temperature at every depth. When I set up my model, I
> initialize the adiabatic temperature profile with specific parameters. In
> theory, it should be the same as the average temperature at every depth.
> But, after billion year calculation, the average temperature at every depth
> deviates away from the initial adiabatic temperature profile.
> So, I wonder if there is an output "average_subtracted_temperature" in
> ASPECT? If so, it could also serve the plume in the incompressible
> convection model.
> Bests,
> Nan
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