[aspect-devel] Temperature mesh refinement criteria

[Wolfgang Bangerth]

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.
-- 
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Wolfgang Bangerth          email:                 bangerth at colostate.edu
                            www: http://www.math.colostate.edu/~bangerth/