petsc-3.11.4 2019-09-28

DMPlexCreateRigidBody

For the default global section, create rigid body modes by function space interpolation

#include "petscdmplex.h"   
PetscErrorCode DMPlexCreateRigidBody(DM dm, MatNullSpace *sp)

Collective on DM

dm -the DM

sp -the null space

Note: This is necessary to provide a suitable coarse space for algebraic multigrid

advanced