PetscDualSpaceApplyFVM#

Apply a functional from the dual space basis to an input function by assuming a point evaluation functional at the cell centroid.

Synopsis#

#include "petscfe.h" 
PetscErrorCode PetscDualSpaceApplyFVM(PetscDualSpace sp, PetscInt f, PetscReal time, PetscFVCellGeom *cgeom, PetscInt Nc, PetscErrorCode (*func)(PetscInt, PetscReal, const PetscReal[], PetscInt, PetscScalar *, void *), void *ctx, PetscScalar *value)

Input Parameters#

sp - The PetscDualSpace object
f - The basis functional index
time - The time
cgeom - A context with geometric information for this cell, we currently just use the centroid
Nc - The number of components for the function
func - The input function
ctx - A context for the function

Output Parameter#

value - The output value (scalar)

Calling sequence#

  PetscErrorCode func(PetscInt dim, PetscReal time, const PetscReal x[], PetscInt numComponents, PetscScalar values[], void *ctx)

Note#

The idea is to evaluate the functional as an integral \( n(f) = \int dx n(x) . f(x)\) where both n and f have Nc components.

Level#

advanced

Location#

src/dm/dt/dualspace/interface/dualspace.c

Index of all DUALSPACE routines
Table of Contents for all manual pages
Index of all manual pages