Cross validation Spider / Aragog

[lsoucasse]

We have now Aragog running, using look up table and producing reasonable output.

But we now need a comparison with Spider to validate the implementation, see first results from @planetmariana here.

[planetmariana]

Hi @timlichtenberg @lsoucasse @nichollsh,

I run the exact same simulation as here, but with interior model=SPIDER. With those conditions the planet reached the global energy balance. Besides the time-stepping factor mentioned #193, the rheological front when using Aragog starts above the CMB, so I'm a bit confused about it, as we are using the same melting curves, just in the P-T space. On the other side, both of them finish around the same time. We can discuss further about this, in the meantime I will check from the Aragog which parameter is causing the behaviour in the first 80 GPa.

[timlichtenberg]

I copy the images from the Aragog run from #306 (comment) to here in this thread again.

It looks to me as if the Aragog simulation is not initialised on an adiabat. From 80 GPa downwards the temperature profile is isothermal already at the first timestep. We need to understand the reason for this, possibly the initialisation is not yet working correctly?

[lsoucasse]

Could you send us the corresponding Aragog input file @planetmariana ?

[planetmariana]

@lsoucasse is the input file Aragog.toml in main, I just change the interior model as SPIDER or Aragog, using both with JANUS. Both simulations took around 12hr, so for now I'm checking from Aragog which parameter can be changed. As discussed before @timlichtenberg if I change rheological_transition_melt_fraction there's a difference, but I don't know how unphysical that can be. See below:

Output from Aragog with rheological_transition_melt_fraction=0.4 :

Output from Aragog with rheological_transition_melt_fraction=0.2

[timlichtenberg]

0.4 is good and can stay. The latter is output from only running Aragog directly, and the former is using PROTEUS to execute Aragog, right? In the latter plot (just Aragog) the temperature profile looks adiabatic, it's only that the initial temperature is not high enough to generate a fully molten planet. This could mean that something is not properly communicated from PROTEUS to Aragog.

[planetmariana]

Yes, these last ones are outputs directly from Aragog. Ok, I see the problem. I will check then outputs/inputs from both sides to see where's the difference.