petsc-3.10.5 2019-03-28
PetscDSGetBoundary
Add a boundary condition to the model
Synopsis
#include "petscds.h"
PetscErrorCode PetscDSGetBoundary(PetscDS ds, PetscInt bd, DMBoundaryConditionType *type, const char **name, const char **labelname, PetscInt *field, PetscInt *numcomps, const PetscInt **comps, void (**func)(void), PetscInt *numids, const PetscInt **ids, void **ctx)
Input Parameters
| ds | - The PetscDS object
|
| bd | - The BC number
|
Output Parameters
| type | - The type of condition, e.g. DM_BC_ESSENTIAL/DM_BC_ESSENTIAL_FIELD (Dirichlet), or DM_BC_NATURAL (Neumann)
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| name | - The BC name
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| labelname | - The label defining constrained points
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| field | - The field to constrain
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| numcomps | - The number of constrained field components
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| comps | - An array of constrained component numbers
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| bcFunc | - A pointwise function giving boundary values
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| numids | - The number of DMLabel ids for constrained points
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| ids | - An array of ids for constrained points
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| ctx | - An optional user context for bcFunc
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Options Database Keys
| -bc_<boundary name> <num> | - Overrides the boundary ids
|
| -bc_<boundary name>_comp <num> | - Overrides the boundary components
|
See Also
PetscDSAddBoundary()
Level
developer
Location
src/dm/dt/interface/dtds.c
Index of all DT routines
Table of Contents for all manual pages
Index of all manual pages