[dune-pdelab] Adaptive Grid Refinement Algorithms

[Christian Engwer]

Hi,

> So, I was wondering, how exactly the two strategies 'element
> fraction'

you state that those N% of the elements with the largest error should
be refined; you always refine the same amount of elements

> and 'error fraction' differed. A quick google search did

you state that those elements where the error is below a certain
threshold, relative to the largest error, should be refined; in this
case the number of refined elements can differ dramatically.

Ciao
Christian

> not yield any viable results, so I figured I would ask here, if
> someone could roughly sketch the difference between the two methods
> for me or recommend further literature, where the two strategies are
> explained.
> 
> Thank you in advance,
> Dion Häfner

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-- 
Prof. Dr. Christian Engwer 
Institut für Numerische und Angewandte Mathematik
Fachbereich Mathematik und Informatik der Universität Münster
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