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Peano
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Default mesh adaptation of the block-structured schemes. More...


Public Member Functions | |
| __init__ (self, Solver solver, "toolbox.blockstructured.api.InterpolateAndRestrictCells.Interpolation" interpolation=toolbox.blockstructured.api.InterpolateAndRestrictCells.Interpolation.Linear, "toolbox.blockstructured.api.InterpolateAndRestrictCells.Restriction" restriction=toolbox.blockstructured.api.InterpolateAndRestrictCells.Restriction.Averaging) | |
| construct_output (self, exahype2_project, peano_project, mesh_adaptation) | |
| Add the two tasks of the mesh adaptation to mesh_adaptation. | |
Data Fields | |
| interpolation | |
| restriction | |
Static Public Attributes | |
| tuple | RepeatCondition |
| Repeat condition of the task which adapts the mesh and balances the load. | |
Protected Member Functions | |
| _add_further_adaptation_action_sets (self, adapt_task) | |
| Add scheme-specific action sets to the task which adapts the mesh. | |
| _add_projection_action_sets (self, project_on_faces_task, exahype2_project) | |
| Add the scheme-specific action sets which project the patches onto the faces and roll the face data over. | |
Protected Attributes | |
| _solver | |
Protected Attributes inherited from exahype2.api.Solver.Solver.MeshAdaptation | |
| _solver | |
Default mesh adaptation of the block-structured schemes.
Abstract base class of exahype2.api.fv.AdaptMeshAndBalanceLoad and exahype2.api.rkfd4.AdaptMeshAndBalanceLoad, which the Finite Volume and the finite difference schemes use unless the user assigns another mesh adaptation to solver.mesh_adaptation. The subclasses only add the scheme-specific action sets (_add_projection_action_sets() and _add_further_adaptation_action_sets()). The generated main runs the phase right after a time step if this time step has asked for a refinement or erase, or if the load balancing has split (exahype2::isMeshAdaptationRequired()). The phase consists of two tasks:
Definition at line 12 of file AdaptMeshAndBalanceLoad.py.
| exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad.__init__ | ( | self, | |
| Solver | solver, | ||
| "toolbox.blockstructured.api.InterpolateAndRestrictCells.Interpolation" | interpolation = toolbox.blockstructured.api.InterpolateAndRestrictCells.Interpolation.Linear, |
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| "toolbox.blockstructured.api.InterpolateAndRestrictCells.Restriction" | restriction = toolbox.blockstructured.api.InterpolateAndRestrictCells.Restriction.Averaging |
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| ) |
| solver | exahype2.api.Solver Solver with a block-structured scheme, i.e. with solver._patch, solver._patch_overlap_update and solver._patch_overlap_current_time_step. |
| interpolation | toolbox.blockstructured.api.InterpolateAndRestrictCells.Interpolation How the patch of a new cell is initialised from its parent. The default is d-linear interpolation. |
| restriction | toolbox.blockstructured.api.InterpolateAndRestrictCells.Restriction How the patches of erased cells are handed over to their parent. The default is averaging. |
Reimplemented from exahype2.api.Solver.Solver.MeshAdaptation.
Definition at line 63 of file AdaptMeshAndBalanceLoad.py.
References exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad.__init__().
Referenced by exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad.__init__().


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Add scheme-specific action sets to the task which adapts the mesh.
They are added before the generic ones. The default adds nothing.
Definition at line 151 of file AdaptMeshAndBalanceLoad.py.
Referenced by exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad.construct_output().

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Add the scheme-specific action sets which project the patches onto the faces and roll the face data over.
Has to be implemented by the subclasses. The task already declares the use of solver._patch, solver._patch_overlap_update and solver._patch_overlap_current_time_step.
Definition at line 161 of file AdaptMeshAndBalanceLoad.py.
| exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad.construct_output | ( | self, | |
| exahype2_project, | |||
| peano_project, | |||
| mesh_adaptation | |||
| ) |
Add the two tasks of the mesh adaptation to mesh_adaptation.
Reimplemented from exahype2.api.Solver.Solver.MeshAdaptation.
Definition at line 89 of file AdaptMeshAndBalanceLoad.py.
References exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad._add_further_adaptation_action_sets(), exahype2.api.fv.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad._add_further_adaptation_action_sets(), exahype2.api.rkfd4.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad._add_further_adaptation_action_sets(), solvers.aderdg.actionsets.AbstractADERDGActionSet.AbstractADERDGActionSet._solver, solvers.fv.actionsets.AbstractFVActionSet.AbstractFVActionSet._solver, solvers.fv.EnclaveTasking.UpdateCell._solver, solvers.fv.SingleSweep.UpdateCell._solver, solvers.limiting.actionsets.AbstractLimiterActionSet.AbstractLimiterActionSet._solver, solvers.rkdg.actionsets.AbstractRungeKuttaDGActionSet.AbstractRungeKuttaDGActionSet._solver, exagrype.api.FD4WithKODissipation.FD4WithKODissipation._solver, exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad._solver, exahype2.api.blockstructured.ConsumeRefinementRequests.ConsumeRefinementRequests._solver, exahype2.api.blockstructured.DynamicMeshRefinement.DynamicMeshRefinement._solver, exahype2.api.blockstructured.LoadCheckpoint._LoadPatchesFromCheckpoint._solver, exahype2.api.blockstructured.LoadCheckpoint.LoadCheckpoint._solver, exahype2.api.fv.actionsets.AbstractFVActionSet.AbstractFVActionSet._solver, exahype2.api.fv.actionsets.ApplyDirichletBoundaryConditions.ApplyDirichletBoundaryConditions._solver, exahype2.api.fv.actionsets.DiscardPatchInterior.DiscardPatchInterior._solver, exahype2.api.fv.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad._solver, exahype2.api.fv.PlotAsVTKFile.PlotAsVTKFile._solver, exahype2.api.fv.RusanovWithExplicitEuler.RusanovWithExplicitEuler._solver, exahype2.api.fv.RusanovWithExplicitEuler.RusanovWithExplicitEulerGenerator._solver, exahype2.api.fv.RusanovWithOptimisticExplicitEuler.RusanovWithOptimisticExplicitEuler._solver, exahype2.api.fv.SetupSimulationOverRegularGrid.SetupSimulationOverRegularGrid._solver, exahype2.api.fv.SetupSimulationWithUserCodedRefinementCriterion.SetupSimulationWithUserCodedRefinementCriterion._solver, exahype2.api.fv.WriteCheckpoint.WriteCheckpoint._solver, exahype2.api.rkfd4.actionsets.AbstractRKFD4ActionSet.AbstractRKFD4ActionSet._solver, exahype2.api.rkfd4.actionsets.ApplyDirichletBoundaryConditions.ApplyDirichletBoundaryConditions._solver, exahype2.api.rkfd4.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad._solver, exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta._solver, exahype2.api.rkfd4.PlotAsVTKFile.PlotAsVTKFile._solver, exahype2.api.rkfd4.SetupSimulationOverRegularGrid.SetupSimulationOverRegularGrid._solver, exahype2.api.rkfd4.WriteCheckpoint.WriteCheckpoint._solver, exahype2.api.Solver.Solver.SolverGenerator._solver, exahype2.api.Solver.Solver.NumericalScheme._solver, exahype2.api.Solver.Solver.NumericalScheme.NumericalSchemeGenerator._solver, exahype2.api.Solver.Solver.GridConstruction._solver, exahype2.api.Solver.Solver.Plotter._solver, exahype2.api.Solver.Solver.MeshAdaptation._solver, 20_additional-solver-steps.RusanovWithDensityFloor._solver, 20_additional-solver-steps.RungeKuttaWithDensityFloor._solver, exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad.RepeatCondition, and exahype2.api.fv.SetupSimulationWithUserCodedRefinementCriterion.SetupSimulationWithUserCodedRefinementCriterion.RepeatCondition.

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Definition at line 111 of file AdaptMeshAndBalanceLoad.py.
Referenced by exahype2.api.fv.RusanovWithExplicitEuler.RusanovWithExplicitEuler.__add_data_to_repository(), exahype2.api.fv.RusanovWithOptimisticExplicitEuler.RusanovWithOptimisticExplicitEuler.__add_data_to_repository(), exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta.__add_data_to_repository(), exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta.__construct_kernel_call(), exahype2.api.fv.RusanovWithExplicitEuler.RusanovWithExplicitEulerGenerator.__construct_kernel_call(), exahype2.api.fv.RusanovWithOptimisticExplicitEuler.RusanovWithOptimisticExplicitEuler.__construct_kernel_call(), exahype2.api.fv.RusanovWithExplicitEuler.RusanovWithExplicitEuler.__create_data_structures(), exahype2.api.fv.RusanovWithOptimisticExplicitEuler.RusanovWithOptimisticExplicitEuler.__create_data_structures(), exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta.__create_data_structures(), exahype2.api.fv.RusanovWithExplicitEuler.RusanovWithExplicitEulerGenerator.__create_time_step_functions(), exahype2.api.fv.RusanovWithOptimisticExplicitEuler.RusanovWithOptimisticExplicitEuler.__create_time_step_functions(), solvers.fv.EnclaveTasking.UpdateCell._add_action_set_entries_to_dictionary(), solvers.fv.SingleSweep.UpdateCell._add_action_set_entries_to_dictionary(), exahype2.api.fv.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad._add_further_adaptation_action_sets(), exahype2.api.rkfd4.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad._add_further_adaptation_action_sets(), exahype2.api.fv.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad._add_projection_action_sets(), exahype2.api.rkfd4.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad._add_projection_action_sets(), exahype2.api.Solver.Solver.Plotter._add_time_interval_bookkeeping_to_solver(), exahype2.api.fv.SetupSimulationOverRegularGrid.SetupSimulationOverRegularGrid._construct_task_graph(), exahype2.api.fv.SetupSimulationWithUserCodedRefinementCriterion.SetupSimulationWithUserCodedRefinementCriterion._create_adapt_mesh_task(), exahype2.api.fv.PlotAsVTKFile.PlotAsVTKFile._create_description(), exahype2.api.rkfd4.PlotAsVTKFile.PlotAsVTKFile._create_description(), exahype2.api.fv.PlotAsVTKFile.PlotAsVTKFile._create_guard(), exahype2.api.rkfd4.PlotAsVTKFile.PlotAsVTKFile._create_guard(), exahype2.api.fv.PlotAsVTKFile.PlotAsVTKFile._create_selected_entries(), exahype2.api.rkfd4.PlotAsVTKFile.PlotAsVTKFile._create_selected_entries(), exahype2.api.fv.PlotAsVTKFile.PlotAsVTKFile._log_plot_graph(), exahype2.api.rkfd4.PlotAsVTKFile.PlotAsVTKFile._log_plot_graph(), exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta._patches(), exahype2.api.fv.SetupSimulationOverRegularGrid.SetupSimulationOverRegularGrid._report_task_graph(), exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta._right_hand_side_action_sets(), exahype2.api.SolverToCPPFiles.SolverToCPPFiles._variables_declaration(), exahype2.api.SolverToCPPFiles.SolverToCPPFiles.construct_output(), exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad.construct_output(), exahype2.api.rkfd4.SetupSimulationOverRegularGrid.SetupSimulationOverRegularGrid.construct_output(), manipulate-solver-steps-illustrations.RusanovWithPostprocessing.construct_output(), exahype2.api.fv.RusanovWithExplicitEuler.RusanovWithExplicitEulerGenerator.construct_output(), exahype2.api.fv.RusanovWithOptimisticExplicitEuler.RusanovWithOptimisticExplicitEuler.construct_output(), exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta.construct_output(), exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta.create_default_mesh_adaptation(), exahype2.api.Solver.Solver.Plotter.create_finish_call(), exahype2.api.Solver.Solver.Plotter.create_is_active_predicate(), exahype2.api.fv.RusanovWithExplicitEuler.RusanovWithExplicitEuler.create_restriction_of_hanging_faces(), exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta.create_restriction_of_hanging_faces(), solvers.rkdg.actionsets.AdaptivityCriterion.AdaptivityCriterion.event_lifetime(), solvers.aderdg.actionsets.AdaptivityCriterion.AdaptivityCriterion.get_body_of_operation(), solvers.aderdg.actionsets.Correction.Correction.get_body_of_operation(), solvers.aderdg.actionsets.DynamicAMR.DynamicAMR.get_body_of_operation(), solvers.aderdg.actionsets.HandleBoundary.HandleBoundary.get_body_of_operation(), solvers.aderdg.actionsets.InitialCondition.InitialCondition.get_body_of_operation(), solvers.aderdg.actionsets.PostprocessSolution.EmptyPostprocessSolution.get_body_of_operation(), solvers.aderdg.actionsets.PostprocessSolution.DoFWisePostprocessSolution.get_body_of_operation(), solvers.aderdg.actionsets.PostprocessSolution.CellWisePostprocessSolution.get_body_of_operation(), solvers.aderdg.actionsets.Prediction.Prediction.get_body_of_operation(), solvers.fv.actionsets.AdaptivityCriterion.AdaptivityCriterion.get_body_of_operation(), solvers.fv.actionsets.InitialCondition.InitialCondition.get_body_of_operation(), solvers.fv.actionsets.PostprocessSolution.VolumeWisePostprocessSolution.get_body_of_operation(), solvers.fv.actionsets.PreprocessSolution.VolumeWisePreprocessSolution.get_body_of_operation(), solvers.fv.actionsets.RollOverUpdatedFace.RollOverUpdatedFace.get_body_of_operation(), solvers.fv.EnclaveTasking.MergeEnclaveTaskOutcome.get_body_of_operation(), solvers.limiting.actionsets.CopyAndConvertPatch.CopyAndConvertPatch.get_body_of_operation(), solvers.limiting.actionsets.SaveNewCellData.SaveNewCellData.get_body_of_operation(), solvers.limiting.actionsets.SpreadLimiterStatus.SpreadLimiterStatus.get_body_of_operation(), solvers.limiting.actionsets.VerifyTroubledness.VerifyTroubledness.get_body_of_operation(), solvers.rkdg.actionsets.AdaptivityCriterion.AdaptivityCriterion.get_body_of_operation(), solvers.rkdg.actionsets.AddVolumeAndFaceSolution.AddVolumeAndFaceSolution.get_body_of_operation(), solvers.rkdg.actionsets.ComputeFinalLinearCombination.ComputeFinalLinearCombination.get_body_of_operation(), solvers.rkdg.actionsets.DynamicAMR.DynamicAMR.get_body_of_operation(), solvers.rkdg.actionsets.HandleBoundary.HandleBoundary.get_body_of_operation(), solvers.rkdg.actionsets.InitialCondition.InitialCondition.get_body_of_operation(), solvers.rkdg.actionsets.LinearCombinationOfEstimates.LinearCombinationOfEstimates.get_body_of_operation(), solvers.rkdg.actionsets.PostprocessSolution.DoFWisePostprocessSolution.get_body_of_operation(), solvers.rkdg.actionsets.PostprocessSolution.CellWisePostprocessSolution.get_body_of_operation(), solvers.rkdg.actionsets.PreprocessSolution.DoFWisePreprocessSolution.get_body_of_operation(), solvers.rkdg.actionsets.PreprocessSolution.CellWisePreprocessSolution.get_body_of_operation(), solvers.rkdg.actionsets.ProjectLinearCombinationOfEstimatesOntoFaces.ProjectLinearCombinationOfEstimatesOntoFaces.get_body_of_operation(), solvers.rkdg.actionsets.SolveRiemannProblem.SolveRiemannProblem.get_body_of_operation(), solvers.rkdg.actionsets.SolveVolumeIntegral.SolveVolumeIntegral.get_body_of_operation(), solvers.rkdg.SeparateSweepsWithEnclaveTasking.MergeEnclaveTaskOutcome.get_body_of_operation(), exagrype.api.actionsets.AddKreissOligerDissipation.AddKreissOligerDissipation.get_body_of_operation(), exahype2.api.blockstructured.DynamicMeshRefinement.DynamicMeshRefinement.get_body_of_operation(), exahype2.api.blockstructured.LoadCheckpoint._LoadPatchesFromCheckpoint.get_body_of_operation(), exahype2.api.fv.actionsets.InitialCondition.InitialCondition.get_body_of_operation(), exahype2.api.fv.actionsets.InsertPatchInterior.InsertPatchInterior.get_body_of_operation(), exahype2.api.fv.actionsets.UpdateCellGPU.UpdateCellGPU.get_body_of_operation(), exahype2.api.rkfd4.actionsets.AddLopsidedAdvection.AddLopsidedAdvection.get_body_of_operation(), exahype2.api.rkfd4.actionsets.ComputeLinearCombination.ComputeLinearCombination.get_body_of_operation(), exahype2.api.rkfd4.actionsets.ComputeMaxEigenvalue.ComputeMaxEigenvalue.get_body_of_operation(), exahype2.api.rkfd4.actionsets.EvaluateRightHandSide.EvaluateRightHandSide.get_body_of_operation(), exahype2.api.rkfd4.actionsets.InitialCondition.InitialCondition.get_body_of_operation(), solvers.fv.actionsets.InitialCondition.InitialCondition.get_body_of_prepareTraversal(), exahype2.api.rkfd4.actionsets.ComputeTimeStepSize.ComputeTimeStepSize.get_body_of_unprepareTraversal(), solvers.aderdg.actionsets.AbstractADERDGActionSet.AbstractADERDGActionSet.get_includes(), solvers.aderdg.actionsets.Correction.Correction.get_includes(), solvers.aderdg.actionsets.DynamicAMR.DynamicAMR.get_includes(), solvers.aderdg.actionsets.HandleBoundary.HandleBoundary.get_includes(), solvers.aderdg.actionsets.InitialCondition.InitialCondition.get_includes(), solvers.aderdg.actionsets.PostprocessSolution.EmptyPostprocessSolution.get_includes(), solvers.aderdg.actionsets.PostprocessSolution.DoFWisePostprocessSolution.get_includes(), solvers.aderdg.actionsets.Prediction.Prediction.get_includes(), solvers.fv.actionsets.AbstractFVActionSet.AbstractFVActionSet.get_includes(), solvers.fv.actionsets.InitialCondition.InitialCondition.get_includes(), solvers.fv.EnclaveTasking.UpdateCell.get_includes(), solvers.fv.SingleSweep.UpdateCell.get_includes(), solvers.limiting.actionsets.AbstractLimiterActionSet.AbstractLimiterActionSet.get_includes(), solvers.limiting.actionsets.CopyAndConvertPatch.CopyAndConvertPatch.get_includes(), solvers.limiting.actionsets.SaveNewCellData.SaveNewCellData.get_includes(), solvers.limiting.actionsets.VerifyTroubledness.VerifyTroubledness.get_includes(), solvers.rkdg.actionsets.AbstractRungeKuttaDGActionSet.AbstractRungeKuttaDGActionSet.get_includes(), solvers.rkdg.actionsets.SolveVolumeIntegral.SolveVolumeIntegral.get_includes(), exahype2.api.blockstructured.ConsumeRefinementRequests.ConsumeRefinementRequests.get_includes(), exahype2.api.blockstructured.DynamicMeshRefinement.DynamicMeshRefinement.get_includes(), exahype2.api.fv.actionsets.AbstractFVActionSet.AbstractFVActionSet.get_includes(), exahype2.api.fv.actionsets.ApplyDirichletBoundaryConditions.ApplyDirichletBoundaryConditions.get_includes(), exahype2.api.rkfd4.actionsets.AbstractRKFD4ActionSet.AbstractRKFD4ActionSet.get_includes(), exahype2.api.rkfd4.actionsets.ApplyDirichletBoundaryConditions.ApplyDirichletBoundaryConditions.get_includes(), solvers.rkdg.actionsets.AddVolumeAndFaceSolution.AddVolumeAndFaceSolution.guards(), solvers.rkdg.actionsets.DynamicAMR.DynamicAMR.guards(), solvers.rkdg.actionsets.HandleBoundary.HandleBoundary.guards(), solvers.rkdg.actionsets.LinearCombinationOfEstimates.LinearCombinationOfEstimates.guards(), solvers.rkdg.actionsets.ProjectLinearCombinationOfEstimatesOntoFaces.ProjectLinearCombinationOfEstimatesOntoFaces.guards(), solvers.rkdg.actionsets.SolveRiemannProblem.SolveRiemannProblem.guards(), solvers.rkdg.actionsets.SolveVolumeIntegral.SolveVolumeIntegral.guards(), exahype2.api.blockstructured.LoadCheckpoint.LoadCheckpoint.index_file_name(), exahype2.api.fv.RusanovWithExplicitEuler.RusanovWithExplicitEuler.kernel_function_name(), exahype2.api.fv.RusanovWithOptimisticExplicitEuler.RusanovWithOptimisticExplicitEuler.kernel_function_name(), exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta.max_eigenvalue_kernel_name(), exahype2.api.fv.PlotAsVTKFile.PlotAsVTKFile.output_file_prefix(), exahype2.api.fv.WriteCheckpoint.WriteCheckpoint.output_file_prefix(), exahype2.api.rkfd4.PlotAsVTKFile.PlotAsVTKFile.output_file_prefix(), exahype2.api.rkfd4.WriteCheckpoint.WriteCheckpoint.output_file_prefix(), and exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta.right_hand_side_kernel_name().
| exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad.interpolation |
Definition at line 86 of file AdaptMeshAndBalanceLoad.py.
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Repeat condition of the task which adapts the mesh and balances the load.
Definition at line 56 of file AdaptMeshAndBalanceLoad.py.
Referenced by exahype2.api.fv.SetupSimulationWithUserCodedRefinementCriterion.SetupSimulationWithUserCodedRefinementCriterion._create_adapt_mesh_task(), and exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad.construct_output().
| exahype2.api.blockstructured.AdaptMeshAndBalanceLoad.AdaptMeshAndBalanceLoad.restriction |
Definition at line 87 of file AdaptMeshAndBalanceLoad.py.
Referenced by exahype2.api.fv.RusanovWithExplicitEuler.RusanovWithExplicitEuler.create_restriction_of_hanging_faces(), and exahype2.api.rkfd4.CentralDifferencesWithRungeKutta.CentralDifferencesWithRungeKutta.create_restriction_of_hanging_faces().