Manual pages | Cast3M

$$$$ DMTD     NOTICE  CHAT      11/09/12    21:15:55     7124           
                                             DATE     11/09/12

   Operateur DMTD                            Voir aussi : MHYB BMTD
   ---------------                                        DMMU        
   CHP1 = 'DMTD' MODL1 RIG1  ;


    Description :
    _____________

    This operator is used with a hybrid mixed finite element method.
    D is the divergence matrix for one element. D is actually a line
    matrix, the coefficients of which are all equal to 1.
    M is the diffusion elementary matrix.
    This operator calculates for each element the product :
                                -1 t
                             D M    D
    Which is in fact adding up the coefficients of each Darcy 
    elementary matrix, allocating the sum to each center of elements.

    Contents :
    __________


       MODL1  : modeled structure (MMODEL type) , description of the
                DARCY formulation (cf. MODE).

       RIG1   : RIGIDITE type, DARCY subtype; Contains 'darcy' inversed
                elementary matrices for hybrid elements (cf. MHYB).

       CHP1   : CHPOINT type, the geometrical support of which is the
                mesh CENTRE. The component's field name is SCAL.