[aspect-devel] Temperature mesh refinement criteria

[Rene Gassmoeller]

This lack of documentation is noted in Github issue #400 
(https://github.com/geodynamics/aspect/issues/400), and would make for a 
good first time pull request for anyone interested in improving the 
documentation ;-).

Best

Rene


On 07/07/2017 01:45 PM, Wolfgang Bangerth wrote:
>
> Felipe,
>
>> I am doing 3D convection simulations, and finally I have implemented 
>> temperature- and strain-rate- based mesh refinement criteria. I tried 
>> each one of them and also the merge (hybrid) combination of them.
>>
>> After some tests, for my particular problem, I have found better 
>> results with the sole temperature-based mesh refinement criterion. 
>> But, using this
>>  sole T-criterion in lieu of an hybrid T-StrRt, suggests optimal 
>> solution
>> of the energy (temperature) equation, and not of the Momentum equation
>> (which would be taken care by the StrainRate criterion). I now both
>> equations are coupled, and perhaps more so in my case where my 
>> viscosity is
>>  temperature dependent, but I have my queries:
>>
>> Is the temperature-based mesh refinement criterion refining the mesh 
>> solely
>> according to the temperature itself? or, to the temperature and the
>> temperature gradients?
>
> It actually looks at the second derivative of the temperature (or, more
> correctly, a numerical approximation of it).
>
> Best
>  W.

-- 
Rene Gassmoeller
http://www.math.colostate.edu/~gassmoel/