Index

NAME

ElmMatVecCalc - functor for calculating element matrix/vector

INCLUDE

include "FEM.h"

SYNTAX

 class ElmMatVecCalc : public HandleId
 {
 public:
   ElmMatVecCalc () {}
   virtual ~ElmMatVecCalc () {}
   virtual void calcElmMatVec
     (
      int            elm_no,
      ElmMatVec&     elmat,
      FiniteElement& fe,
      IntegrandCalc& integrand,
      FEM&           fem
     );

   virtual void calcElmMatVec
     (
      int            elm_no,
      ElmMatVec&     elmat,
      FiniteElement& fe,
      FEM&           fem
      // IntegrandCalc objects are made inside this function body
     );
 };

KEYWORDS

finite  element  method,  element matrix, element vector, element
contributions

DESCRIPTION

The class is a functor, defining (overloaded)  virtual  functions
calcElmMatVec  that  can be used for computing the element matrix
and vector in finite element problems. The functor is an alterna­
tive to the FEM::calcElmMatVec function (a class derived from FEM
has only one function of this type, if the problem needs  several
finite  element algorithms the ElmMatVecCalc functor is useful in
addition).

CONSTRUCTORS AND INITIALIZATION

There is only an empty (default C++) constructor. Problem  depen­
dent derived classes will usually have references to an simulator
class containing all the problem dependent data. However,  it  is
common  to  just  apply a default implementation of this functor,
provided by the ElmMatVecCalcStd class.

MEMBER FUNCTIONS

calcElmMatVec - calculates the element matrix  and  vector.  Same
purpose  as  the FEM::calcElmMatVec, but implemented as a functor
instead of as a virtual function in the user's problem class.  As
a  functor,  there  can  be  multiple  versions  of  the  element
matrix/vector computation function.

SEE ALSO

class FEM

DEVELOPED BY

SINTEF Applied Mathematics, Oslo, Norway, and University of Oslo,
Dept. of Mathematics, Norway

AUTHOR

Hans Petter Langtangen, SINTEF/UiO