DMBoundaryConditionType#

indicates what type of boundary condition is to be imposed

Synopsis#

typedef enum {
  DM_BC_ESSENTIAL          = 1,
  DM_BC_ESSENTIAL_FIELD    = 5,
  DM_BC_NATURAL            = 2,
  DM_BC_NATURAL_FIELD      = 6,
  DM_BC_ESSENTIAL_BD_FIELD = 9,
  DM_BC_NATURAL_RIEMANN    = 10
} DMBoundaryConditionType;

Values#

DM_BC_ESSENTIAL - A Dirichlet condition using a function of the coordinates
DM_BC_ESSENTIAL_FIELD - A Dirichlet condition using a function of the coordinates and auxiliary field data
DM_BC_ESSENTIAL_BD_FIELD - A Dirichlet condition using a function of the coordinates, facet normal, and auxiliary field data
DM_BC_NATURAL - A Neumann condition using a function of the coordinates
DM_BC_NATURAL_FIELD - A Neumann condition using a function of the coordinates and auxiliary field data
DM_BC_NATURAL_RIEMANN - A flux condition which determines the state in ghost cells

Note#

The user can check whether a boundary condition is essential using (type & DM_BC_ESSENTIAL), and similarly for natural conditions (type & DM_BC_NATURAL)