+ //Calcul de la contribution de la condition limite de Neumann au second membre
+ if( _NdirichletNodes !=_NboundaryNodes)
+ {
+ vector< int > boundaryFaces = _mesh.getBoundaryFaceIds();
+ int NboundaryFaces=boundaryFaces.size();
+ for(int i = 0; i< NboundaryFaces ; i++)//On parcourt les faces du bord
+ {
+ Face Fi = _mesh.getFace(i);
+ for(int j = 0 ; j<_Ndim ; j++)//On parcourt les noeuds de la face
+ {
+ if(find(_dirichletNodeIds.begin(),_dirichletNodeIds.end(),Fi.getNodeId(j))==_dirichletNodeIds.end())//node j is an Neumann BC node (not a Dirichlet BC node)
+ {
+ j_int=unknownNodeIndex(Fi.getNodeId(j), _dirichletNodeIds);//indice du noeud j en tant que noeud inconnu
+ if( _neumannValuesSet )
+ coeff =Fi.getMeasure()/_Ndim*_neumannBoundaryValues[Fi.getNodeId(j)];
+ else
+ coeff =Fi.getMeasure()/_Ndim*_limitField[_mesh.getNode(Fi.getNodeId(j)).getGroupName()].normalForce;
+ VecSetValue(_b, j_int, coeff, ADD_VALUES);
+ }
+ }
+ }
+ }
+