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)

See Also#

DM, DMAddBoundary(), DSAddBoundary(), DSGetBoundary()

Level#

beginner

Location#

include/petscdmtypes.h

Examples#

src/snes/tutorials/ex12.c
src/snes/tutorials/ex13.c
src/snes/tutorials/ex17.c
src/snes/tutorials/ex20.c
src/snes/tutorials/ex23.c
src/snes/tutorials/ex24.c
src/snes/tutorials/ex26.c
src/snes/tutorials/ex36.c
src/snes/tutorials/ex56.c
src/snes/tutorials/ex62.c
src/snes/tutorials/ex63.c

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