On 6/6/23 14:24, Mathieu wrote:
for a post-processing step, I have to evaluate my temperature field at some
points outside the mesh close to its boundary.
I know that shape functions are not defined outside the mesh, that's why I
wanted to extrapolate them.
My idea was to use the gradient of the temperature field to come up with an
extrapolation.
But I do not know if that's reasonable.
Like Bruno already said in other words, you are starting at the wrong end of
the question. In a first step, define mathematically *what* it is you want to
do (and justify why this is the right choice). Then, in a second step, one can
think about *how* to implement this.
Best
W.
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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