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,
  DM_BC_LOWER_BOUND        = 4,
  DM_BC_UPPER_BOUND        = 8
} 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

• DM_BC_LOWER_BOUND - A lower bound on the solution along a boundary

• DM_BC_UPPER_BOUND - An upper bound on the solution along a boundary

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

Level

beginner

Location

include/petscdmtypes.h

Examples

src/dm/dt/fe/tests/ex1.c
src/dm/dt/fe/tests/ex2.c
src/dm/dt/tests/ex10.c
src/dm/impls/forest/tests/ex2.c
src/dm/impls/plex/tests/ex102.c
src/dm/impls/plex/tests/ex38.c
src/dm/impls/plex/tests/ex39.c
src/dm/impls/plex/tests/ex49.c
src/dm/impls/plex/tests/ex61.c
src/dm/impls/plex/tests/ex73.c

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