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$$$$ HYBP     NOTICE  CHAT      11/09/12    21:16:30     7124           
                                             DATE     11/09/12
                                             
  Operateur HYBP                           Voir aussi :
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    CHP4 = HYBP MODE1 RIG1 CHP1 (TAB2) (CHP2) (RIG2 CHP3) ;


    Description :
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    The HYBP operator creates the head field from the TH field
(with TH unknown of the final problem). This operator is devoted to
the DARCY formulation resolved by a hybrid mixed finite element method.

    Contents :
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       MODE1  : modeled structure (MMODEL type) , description of the
                DARCY formulation (cf. MODE).

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

       CHP1   : CHPOINT type; Contains the TH solution (with TH unknown
                of the final system). The geometrical support of this
                field is the MAILLAGE FACE included in TAB1. One of the
                component's field name must be TH.

       TAB2   : TABLE type, DARCY_TRANSITOIRE subtype. Contains initials
                fields and numericals coefficients for the discretization
                time scheme (cf darcytra procedure).
                !! implementation of volumetrics forces is not possibles
                in this case (cf arguments RIG2 and CHP3) !!
            

       CHP2   : CHPOINT type; Contains the integral of the source term
                over each element. The geometrical support of this
                field is the MAILLAGE CENTRE included in TAB1. The
                component's field name is SOUR. This argument is
                optional because it's zero if the source term is zero.

       RIG2   : RIGIDITE type, MASSE subtype; Contains 'mass'
                elementary matrices for hybrid elements (cf. MHYB).

       CHP3   : CHPOINT type, FX FY (FZ) components ; means volumetrics
                forces on each element. The geometrical support of this
                field is the MAILLAGE CENTRE included in TAB1. This
                argument is optional. It usually uses for resolution of
                pressure written DARCY problem.
                It must be associated with RIG2 argument.

       CHP4   : CHPOINT type result ; Contains the average head field
                for each element. The geometrical support of this field
                is the MAILLAGE CENTRE included in TAB1. The component's
                field name is H.