petsc4py.PETSc.FE#

class petsc4py.PETSc.FE#

Bases: Object

A PETSc object that manages a finite element space.

Enumerations

Type

The finite element types.

Methods Summary

`create`([comm])	Create an empty `FE` object.
`createDefault`(dim, nc, isSimplex[, qorder, ...])	Create a `FE` for basic FEM computation.
`createLagrange`(dim, nc, isSimplex, k[, ...])	Create a `FE` for the basic Lagrange space of degree k.
`destroy`()	Destroy the `FE` object.
`getBasisSpace`()	Return the `Space` used for the approximation of the `FE` solution.
`getDimension`()	Return the dimension of the finite element space on a cell.
`getDualSpace`()	Return the `DualSpace` used to define the inner product for the `FE`.
`getFaceQuadrature`()	Return the `Quad` used to calculate inner products on faces.
`getNumComponents`()	Return the number of components in the element.
`getNumDof`()	Return the number of DOFs.
`getQuadrature`()	Return the `Quad` used to calculate inner products.
`getSpatialDimension`()	Return the spatial dimension of the element.
`getTileSizes`()	Return the tile sizes for evaluation.
`setBasisSpace`(sp)	Set the `Space` used for the approximation of the solution.
`setDualSpace`(dspace)	Set the `DualSpace` used to define the inner product.
`setFaceQuadrature`(quad)	Set the `Quad` used to calculate inner products on faces.
`setFromOptions`()	Set parameters in a `FE` from the options database.
`setNumComponents`(comp)	Set the number of field components in the element.
`setQuadrature`(quad)	Set the `Quad` used to calculate inner products.
`setTileSizes`(blockSize, numBlocks, ...)	Set the tile sizes for evaluation.
`setType`(fe_type)	Build a particular `FE`.
`setUp`()	Construct data structures for the `FE` after the `Type` has been set.
`view`([viewer])	View a `FE` object.

Methods Documentation

create(comm=None)#

Create an empty FE object.

Collective.

The type can then be set with setType.

Parameters:: comm (Comm | None) – MPI communicator, defaults to Sys.getDefaultComm.
Return type:: Self

See also

setType, PetscFECreate

Source code at petsc4py/PETSc/FE.pyx:53

createDefault(dim, nc, isSimplex, qorder=DETERMINE, prefix=None, comm=None)#

Create a FE for basic FEM computation.

Collective.

Parameters:

dim (int) – The spatial dimension.
nc (int) – The number of components.
isSimplex (bool) – Flag for simplex reference cell, otherwise it’s a tensor product.
qorder (int) – The quadrature order or DETERMINE to use Space polynomial degree.
prefix (str) – The options prefix, or None.
comm (Comm | None) – MPI communicator, defaults to Sys.getDefaultComm.

Return type:

Self

See also

PetscFECreateDefault

Source code at petsc4py/PETSc/FE.pyx:76

createLagrange(dim, nc, isSimplex, k, qorder=DETERMINE, comm=None)#

Create a FE for the basic Lagrange space of degree k.

Collective.

Parameters:

dim (int) – The spatial dimension.
nc (int) – The number of components.
isSimplex (bool) – Flag for simplex reference cell, otherwise it’s a tensor product.
k (int) – The degree of the space.
qorder (int) – The quadrature order or DETERMINE to use Space polynomial degree.
comm (Comm | None) – MPI communicator, defaults to Sys.getDefaultComm.

Return type: