#include "petscds.h" PetscErrorCode PetscDSAddBoundaryByName(PetscDS ds, DMBoundaryConditionType type, const char name[], const char lname[], PetscInt Nv, const PetscInt values[], PetscInt field, PetscInt Nc, const PetscInt comps[], void (*bcFunc)(void), void (*bcFunc_t)(void), void *ctx, PetscInt *bd)Collective on ds

ds | - The PetscDS object | |

type | - The type of condition, e.g. DM_BC_ESSENTIAL/DM_BC_ESSENTIAL_FIELD (Dirichlet), or DM_BC_NATURAL (Neumann) | |

name | - The BC name | |

lname | - The naem of the label defining constrained points | |

Nv | - The number of DMLabel values for constrained points | |

values | - An array of label values for constrained points | |

field | - The field to constrain | |

Nc | - The number of constrained field components (0 will constrain all fields) | |

comps | - An array of constrained component numbers | |

bcFunc | - A pointwise function giving boundary values | |

bcFunc_t | - A pointwise function giving the time derviative of the boundary values, or NULL | |

ctx | - An optional user context for bcFunc |

bd | - The boundary number |

-bc_<boundary name> <num> | - Overrides the boundary ids | |

-bc_<boundary name>_comp <num> | - Overrides the boundary components |

bcFunc(PetscInt dim, PetscReal time, const PetscReal x[], PetscInt Nc, PetscScalar bcval[])

bcFunc(PetscInt dim, PetscInt Nf, PetscInt NfAux,

const PetscInt uOff[], const PetscInt uOff_x[], const PetscScalar u[], const PetscScalar u_t[], const PetscScalar u_x[],

const PetscInt aOff[], const PetscInt aOff_x[], const PetscScalar a[], const PetscScalar a_t[], const PetscScalar a_x[],

PetscReal time, const PetscReal x[], PetscScalar bcval[])

dim | - the spatial dimension | |

Nf | - the number of fields | |

uOff | - the offset into u[] and u_t[] for each field | |

uOff_x | - the offset into u_x[] for each field | |

u | - each field evaluated at the current point | |

u_t | - the time derivative of each field evaluated at the current point | |

u_x | - the gradient of each field evaluated at the current point | |

aOff | - the offset into a[] and a_t[] for each auxiliary field | |

aOff_x | - the offset into a_x[] for each auxiliary field | |

a | - each auxiliary field evaluated at the current point | |

a_t | - the time derivative of each auxiliary field evaluated at the current point | |

a_x | - the gradient of auxiliary each field evaluated at the current point | |

t | - current time | |

x | - coordinates of the current point | |

numConstants | - number of constant parameters | |

constants | - constant parameters | |

bcval | - output values at the current point |

Index of all DT routines

Table of Contents for all manual pages

Index of all manual pages