From: wolf
- Non-conforming elements: While - deal.II is quite flexible with respect to - the finite element to be used, it was written with Lagrange - elements in mind. The basic problems in the implementation of - other elements would therefore be the computation of shape - function values if the shape functions depend on the shape of - the cell. Since this is not the case for the usual continuous - elements, the present implementation does not provide all - information necessary for the computation of these values. -
- -
- In order to implement these elements, it would therefore be
- necessary to review the interface between the
- FEValues
class and the
- FiniteElement
class. This would probably also be
- the right time to further separate the implementation of the
- mapping from unit to real cell from the actual finite element
- code.
-
The hp-method of finite elements: Implementing this will need a class analogous to the