Dear deal.II community,
I am looking for a way to integrate u_h(x,y,z) = \sum \alpha_i
\phi_i(x,y,z) over a single dimension, say z, i.e. a way to perform
\tilde{u}_h = \int u_h(x,y,z) dz. u_h is the finite element solution of
the partial differential equation that I am solving. As usual, in my
application u_h is represented in the form of a solution vector that
contains the coefficients \alpha_i corresponding to the basis functions
\phi_i of the finite element space I chose for the spatial
discretization. The integration can be considered a post processing
step.My application is using the MPI capabilities of the deal.II library and, hence, the solution vector is distributed among many cores/nodes. It seems to me that this complicates the computation of the average, i.e. the above integral, because when integrating along one direction, I need information located on many different cores. I looked through the tutorials, the FAQ, the google user group and searched different places in the library, if there are functions that integrate out one direction/dimension. However, I was unlucky. I would like to ask, if I overlooked something, if anyone did implement something like this already or if anyone could give a rough strategy how he/she would go about implementing this average. I am looking forward to your answers and thank you in advance, Nils -- Nils Schween Phone: +49 6221 516 557 Mail: [email protected] PGP-Key: 4DD3DCC0532EE96DB0C1F8B5368DBFA14CB81849 Max Planck Institute for Nuclear Physics Astrophysical Plasma Theory (APT) Saupfercheckweg 1, D-69117 Heidelberg https://www.mpi-hd.mpg.de/mpi/en/research/scientific-divisions-and-groups/independent-research-groups/apt -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/dealii/87o6w7p3pm.fsf%40mpi-hd.mpg.de.
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