dune-pdelab
2.0.0
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#include <dune/pdelab/localoperator/diffusion.hh>
Public Types | |
enum | { doPatternVolume = true } |
enum | { doAlphaVolume = true } |
enum | { doLambdaVolume = true } |
enum | { doLambdaBoundary = true } |
typedef double | 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 | |
Diffusion (const K &k_, const A0 &a0_, const F &f_, const B &bctype_, const J &j_, int intorder_=2) | |
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 R > | |
void | jacobian_volume (const EG &eg, const LFSU &lfsu, const X &x, const LFSV &lfsv, LocalMatrix< R > &mat) const |
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 |
void | setTime (doublet_) |
set time for subsequent evaluation More... | |
double | 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... | |
a local operator for solving the diffusion equation
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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References dim.
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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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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 time for subsequent evaluation
This method set the time for subsequent calls to the alpha_*(), lambda_*(), jacobian_*() and jacobian_apply_*() methods.
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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.