From 0aaab86cbfd96595fcdf2072794c6162411b8a88 Mon Sep 17 00:00:00 2001 From: wolf Date: Tue, 13 Mar 2001 10:23:33 +0000 Subject: [PATCH] Note mapping branch merge. git-svn-id: https://svn.dealii.org/trunk@4193 0785d39b-7218-0410-832d-ea1e28bc413d --- deal.II/doc/news/2001/c-3-1.html | 39 ++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/deal.II/doc/news/2001/c-3-1.html b/deal.II/doc/news/2001/c-3-1.html index 67edfae648..644cf75f46 100644 --- a/deal.II/doc/news/2001/c-3-1.html +++ b/deal.II/doc/news/2001/c-3-1.html @@ -26,6 +26,44 @@ documentation, etc.

General

    +
  1. + New: The finite element classes have been redesigned from + scratch to allow also elements that depend on the actual cell + shape, like Raviart-Thomas, BDM or edge elements. Presently, we + have implemented continuous and discontinous Lagrange elements, + that can be easily extended to higher degree. E.g. for + continuous FEs we've already implemented elements up to degree + four, for discontinuous FEs up to degree 10. +

    + +

    + Furthermore we have totally reimplemented the mapping + between unit and real cell. In future we won't be restricted + to Q1 mapping any more, but we will have + Qp mappings of arbitrary degree p. Presently + implemented are mappings up to degree four in 2d, and degree + three in 3d. This allows to approximate curved boundaries not + only by straight lines (linear approximation) but also by + quadratic, cubic, etc approximation. The finite elements will + be able to be combined with arbitrary mappings. So in future we + can use subparametric, iso- as well as superparametric + elements. +

    + +

    + The new implementation uses a totally new structure of + communication between FEValues, the + FiniteElements and the Mappings. Despite of this, + the new structure will almost not be 'visible' to the user of + deal.II as we tried to retain the interface + to the user (mainly that of FEValues) as far as + possible. +

    + +
    + (RH & GK 2001/03/13) +

    +
  2. New: There is now some support to include and use routines from the .
    (Ralf Hartmann 2001/01/22)

    +
  3. New: function contract for two arguments of Tensor<1,dim> -- 2.39.5