dune-pdelab
2.0.0
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a local operator for solving the Poisson equation in instationary problems More...
#include <dune/pdelab/localoperator/poisson.hh>
Public Types | |
enum | { doPatternVolume = true } |
enum | { doAlphaVolume = true } |
enum | { doLambdaVolume = true } |
enum | { doLambdaBoundary = true } |
typedef Time | RealType |
Flags for the sparsity pattern | |
enum | { doPatternVolume } |
Whether to assemble the pattern on the elements, i.e. whether or not pattern_volume() should be called. More... | |
enum | { doPatternVolumePostSkeleton } |
Whether to assemble the pattern on the elements after the skeleton has been handled, i.e. whether or not pattern_volume_post_skeleton() should be called. More... | |
enum | { doPatternSkeleton } |
Whether to assemble the pattern on the interior intersections, i.e. whether or not pattern_skeleton() should be called. More... | |
enum | { doPatternBoundary } |
Whether to assemble the pattern on the boundary intersections, i.e. whether or not pattern_boundary() should be called. More... | |
Flags for the non-constant part of the residual and the jacobian | |
enum | { doAlphaVolume } |
Whether to call the local operator's alpha_volume(), jacobian_apply_volume() and jacobian_volume(). More... | |
enum | { doAlphaVolumePostSkeleton } |
Whether to call the local operator's alpha_volume_post_skeleton(), jacobian_apply_volume_post_skeleton() and jacobian_volume_post_skeleton(). More... | |
enum | { doAlphaSkeleton } |
Whether to call the local operator's alpha_skeleton(), jacobian_apply_skeleton() and jacobian_skeleton(). More... | |
enum | { doAlphaBoundary } |
Whether to call the local operator's alpha_boundary(), jacobian_apply_boundary() and jacobian_boundary(). More... | |
Flags for the constant part of the residual | |
enum | { doLambdaVolume } |
Whether to call the local operator's lambda_volume(). More... | |
enum | { doLambdaVolumePostSkeleton } |
Whether to call the local operator's lambda_volume_post_skeleton(). More... | |
enum | { doLambdaSkeleton } |
Whether to call the local operator's lambda_skeleton(). More... | |
enum | { doLambdaBoundary } |
Whether to call the local operator's lambda_boundary(). More... | |
Special flags | |
enum | { doSkeletonTwoSided } |
Whether to visit the skeleton methods from both sides. More... | |
Public Member Functions | |
InstationaryPoisson (F &f_, B &bctype_, J &j_, unsigned int quadOrder) | |
construct InstationaryPoisson More... | |
void | setTime (Time t) |
set the time for subsequent evaluation on the parameter functions More... | |
template<typename EG , typename LFSU , typename X , typename LFSV , typename R > | |
void | alpha_volume (const EG &eg, const LFSU &lfsu, const X &x, const LFSV &lfsv, R &r) const |
template<typename EG , typename LFSU , typename X , typename LFSV , typename M > | |
void | jacobian_volume (const EG &eg, const LFSU &lfsu, const X &x, const LFSV &lfsv, M &matrix) const |
Compute the Laplace stiffness matrix for the element given in 'eg'. More... | |
template<typename EG , typename LFSV , typename R > | |
void | lambda_volume (const EG &eg, const LFSV &lfsv, R &r) const |
template<typename IG , typename LFSV , typename R > | |
void | lambda_boundary (const IG &ig, const LFSV &lfsv, R &r) const |
void | jacobian_apply_volume (const EG &eg, const LFSU &lfsu, const X &x, const LFSV &lfsv, Y &y) const |
apply local jacobian of the volume term More... | |
template<typename LFSU , typename LFSV , typename LocalPattern > | |
void | pattern_volume (const LFSU &lfsu, const LFSV &lfsv, LocalPattern &pattern) const |
Time | getTime () const |
get current time More... | |
void | preStep (RealType time, RealType dt, int stages) |
to be called once before each time step More... | |
void | postStep () |
to be called once at the end of each time step More... | |
void | preStage (RealType time, int r) |
to be called once before each stage More... | |
int | getStage () const |
get current stage More... | |
void | postStage () |
to be called once at the end of each stage More... | |
RealType | suggestTimestep (RealType dt) const |
to be called after stage 1 More... | |
Protected Attributes | |
F & | f |
B & | bctype |
J & | j |
Laplace | laplace_ |
unsigned int | quadOrder_ |
a local operator for solving the Poisson equation in instationary problems
with conforming finite elements on all types of grids in any dimension
F | Grid function type giving f |
B | Grid function type selecting boundary condition |
J | Grid function type giving j |
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construct InstationaryPoisson
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get current stage
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get current time
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apply local jacobian of the volume term
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Compute the Laplace stiffness matrix for the element given in 'eg'.
M | Type of the element stiffness matrix |
[in] | eg | The grid element we are assembling on |
[in] | lfsu | Local ansatz function space basis |
[in] | lfsv | Local test function space basis |
[in] | x | Current configuration; gets ignored for linear problems like this one |
[out] | matrix | Element stiffness matrix |
References Dune::PDELab::Laplace::jacobian_volume(), and Dune::PDELab::Poisson< F, B, J >::laplace_.
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to be called once at the end of each stage
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to be called once at the end of each time step
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to be called once before each stage
time | Time of the stage |
r | Number of the stage, r ∈ [1, nstages] inclusive, where nstages is the number of stage in the step given in the previous call to preStep() |
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to be called once before each time step
time | Time at beginning of the step. |
dt | Size of time step. |
stages | Number of stages to do in the step. For the MultiStepMethod this is always 1. |
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set the time for subsequent evaluation on the parameter functions
References Dune::PDELab::InstationaryPoisson< Time, F, B, J >::bctype, Dune::PDELab::InstationaryPoisson< Time, F, B, J >::f, Dune::PDELab::InstationaryPoisson< Time, F, B, J >::j, and Dune::PDELab::InstationaryLocalOperatorDefaultMethods< Time >::setTime().
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to be called after stage 1
This may be called on the spatial local operator in the case of an explicit one step scheme. It is called after stage 1 has been assembled (so the time given to preStep() may not apply anymore in this case). All the alpha_*() and lambda_*() methods should have been called, so they are a good place to generate the information returned here.
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