hyteg merge requestshttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests2024-02-21T17:05:49+01:00https://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/632Draft: Convection Model Operators, SUPG Stabilisation Operators, Elementwise DoFValueOperators (+Tests), Second derivatives for the Blending Maps, PETScHDF5 ...2024-02-21T17:05:49+01:00Andreas BurkhartDraft: Convection Model Operators, SUPG Stabilisation Operators, Elementwise DoFValueOperators (+Tests), Second derivatives for the Blending Maps, PETScHDF5 Function Saving, Projection subclasses for Smoothers and Restriction/Prolongation**Preface: Our pipeline seems to be broken right now, so we should probably wait until it works again.**
This merge request contains several new operators and features aimed at the TerraNeo application.
A few comments on the content o...**Preface: Our pipeline seems to be broken right now, so we should probably wait until it works again.**
This merge request contains several new operators and features aimed at the TerraNeo application.
A few comments on the content of the various diffs:
**composites/P2P1TaylorHoodCompStokesOperator.hpp:** Implements a P2P1 Block Operator for the compressible Stokes (both ALA and TALA are available) with potentially temperature dependent viscosity. It can also generate an appropriate right hand side. You can also activate or deactivate the frozen velocity approach (i.e. if the compressible term in the mass conservation equation is made explicit).
LHS velocity:
$$2 \int_{\Omega} \eta(x,T) \sigma(u) : \sigma(v) \text{ } dx - \frac{2}{\text{dim}} \int_{\Omega}{\eta(x,T) (\nabla \cdot u) \cdot (\nabla \cdot v)} \text{ } dx - \int_{\Omega} \text{div}(v)p_d \text{ } dx - \int_\Omega \frac{\text{Di}}{\Gamma_0} \rho(x) (K_T)^{-1} p_d g \cdot v \text{ } dx$$
RHS velocity:
$$-\int_\Omega \frac{\text{Ra}}{\text{Pe}} \rho(x) \alpha T_d g \cdot v \text{ } dx$$
LHS pressure (here without frozen velocity):
$$ -\int_\Omega \left (\frac{\nabla \rho(x)}{\rho(x)} \cdot u \right ) q \text{ } dx - \int_\Omega (\nabla \cdot u) q \text{ } dx$$
RHS pressure: 0
**src/p2functionspace/P2CompTransportOperator.hpp:** Implements a P2 Operator for the time (in-)dependent energy conservation equation with optional SUPG Stabilisation. Various time stepping schemes (implicit Euler, BDF2, Crank-Nicolson) are available (some additional function calls from outside might be required, e.g. the operator provides a method to save the previous time step right hand side for crank nicolson). Can also be used for the diffusion solve step when using the MMOC operator splitting approach. It can also generate an appropriate right hand side.
LHS temperature (here for the adiabatic heat on the lhs, but can be also be made explicit):
$$ \int_\Omega \frac{\partial T}{\partial t} w \text{ } dx + \int_\Omega (u \cdot \nabla T) w \text{ } dx + \int_\Omega \frac{k }{\text{Pe} \text{ } C_p}\nabla T \cdot \nabla \left ( \frac{w}{\rho(x)} \right ) \text{ } dx - \int_\Omega \text{Di} \text{ } \frac{\alpha}{C_p} T (u \cdot g )w \text{ } dx + \text{SUPG Terms (if used)}$$
RHS temperature:
$$ - \int_\Omega \frac{1}{C_p} H w \text{ } dx -\int_\Omega \frac{\text{Pe}}{\rho(x) C_p}\frac{\text{Di}}{\text{Ra}} \left (\tau\left (u,\eta\left (x,T \right )\right ) : {\varepsilon(u)}\right ) w \text{ } dx + \text{SUPG Terms (if used)}$$
The lhs and rhs above are consequently also dependent on the chosen time discretisation.
**src/hyteg/p2functionspace/P2FullViscousTDependentOperator.hpp, src/hyteg/p2functionspace/P2GradRhoRho_P2_Operator.hpp, src/hyteg/p2functionspace/P2ScaledMassDiffusionOperator.hpp, src/hyteg/p2functionspace/P2VariableBlendingKMassScalarToVectorOperator.hpp, src/hyteg/gridtransferoperators/P2toP1GradRhoRho_P2_Operator.hpp, src/hyteg/gridtransferoperators/P1toP2VariableBlendingKMassScalarToVectorOperator.hpp:** Various operators that conveniently combine the usage of multiple other operators (e.g. if we apply one on every component).
**src/elementwiseoperators:** Added all combinations of P1/P2 ElementwiseDoFValueOperator classes. These operators can be inherited from and provide a way (via the DoFValues_ vector) to access the DoFs of another FEM function during the evaluation of a form. This allows us for the creation of operators like an advection operator that takes a velocity field as an additional input.
Added a setConstantScaling function to all elementwise operators. This can be used to scale your operators by a constant on the fly (without having to create for example a linear combination form).
There are some bug fixes and the ability to use a custom form for P2ToP1 and P1ToP2 elementwise operators included.
**src/elementwiseoperators/generated:** Folder containing all of the generated ElementwiseDoFValueOperators. In particular it adds operators for adiabatic heating, advection, diffusion (only supg), temperature dep. stokes, the grad(rho)/rho * u compressible term in the mass conservation equation, div_k_grad scaled by rho^-1, mass(only supg), shear heat and respective SUPG Stabilisation terms.
**src/p1functionspace/VertexDoFFunction, src/edgedofspace/EdgeDoFFunction, src/functions/DoFValueFunctions:** Added a DoFValueFunction class that both VertexDoFFunction and EdgeDoFFunction inherit from. No previous functionality of VertexDoFFunction and EdgeDoFFunction was changed, I just implemented the additional functions defined in the DoFValueFunction base class. The defined functions are required for the DoFValueOperators to work.
**src/hyteg/composites/VelocityOperator_T_Wrapper, src/hyteg/solvers/SubstituteSolver.hpp:** Some convenient wrappers, allowing you to wrap a operator with a different VelocityOperator_T type and to use a solver for a different operator type (e.g. if you want to solve Laplace as a preconditioner, but the preconditioner is expected to be a solver for a different operator).
**src/petsc/PETScHDF5FunctionSave.hpp:** Functions that allow you to save functions and paramters via creating a PETSc Vector and saving it in parallel to a binary file via HDF5. Has some limitations since you can only reload your functions in the same configuration as you saved it.
**src/solvers/preconditioners/stokes:** Two preconditioner classes used for benchmarks and the convection model
**src/solvers/solvertemplates/StokesSolverTemplates.hpp:** Pulled over some changes to the StokesSolverTemplates solver used in the other Terraneo branches. No functionality is changed but you can now distinguish between absolute and relative tolerance.
**src/solvers/ChebyshevSmoother.hpp:** Added a subclass of the Chebyshev Smoother that contains a normal projection at an appropriate spot for the freeslip boundary conditions.
**src/solvers/GMRESSolver.hpp:** Serveral bug fixes and additional functions from Andreas Wagner to the GMRES solver which we found during our testing of the GMRES.
**src/solvers/MinResSolver.hpp:** Pulled over some changes to the MinRes solver used in the other Terraneo branches. No functionality is changed but you can now define an absolute tolerance.
**src/solvers/UzawaSmoother.hpp, /src/hyteg/composites/P2P1UzawaDampingFactorEstimationOperator.hpp:** Added functions for the estimation of the Uzawa Omega paramter also in case of the P2CompStokesOperator and added a subclass of the UzawaSmoother that contains a normal projection at an appropriate spot for the freeslip boundary conditions.
**src/hyteg/gridtransferoperators/P2P1StokesToP2P1StokesProlongation.hpp, src/hyteg/gridtransferoperators/P2P1StokesToP2P1StokesRestriction.hpp:** Restriction and Prolongation operator subclasses that contains a normal projection at an appropriate spot for the freeslip boundary conditions.
**data/meshes:** Just some additional meshes which are offset from the origin (are used for testing with the sphericalCoordinateMap blending map.
**src/forms:** Just some additional generated blending forms.
**src/geometry:** Added second derivative functions (needed for SUPG Stabilisiation) for all blending maps and a new spherical coordinate map.
**tests/hyteg/operators:** Added tests checking if the various DoFValueOperators are calculating the correct integrals and if the diagonal calculation for the temperature dependent stokes works.
Hopefully I haven't forgotten anything and these are all changes.Andreas BurkhartAndreas Burkharthttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/601Draft: Access to individual DoFs2024-06-06T08:50:47+02:00Marcus MohrDraft: Access to individual DoFs# Idea
The idea of this suggested extension is to allow read/write access to individual degrees of freedom of a FE-function from the outside. IMHO this could provide an easy and practical way for users to implement functionality that is ...# Idea
The idea of this suggested extension is to allow read/write access to individual degrees of freedom of a FE-function from the outside. IMHO this could provide an easy and practical way for users to implement functionality that is currently not (directly) representable by the available function class methods. We see that in these cases either existing methods, such as e.g. `interpolate()`, are creatively (mis)used to accomplish the respective goal, or needlessly expensive workarounds, such as e.g. `velocityMaxMagnitude()` from `CFDHelpers.cpp` need to be implemented.
# DoFAccessors
In the current proof-of-concept implementation access to a degree of freedom is accomplished via two templated free-functions
- `readDoFValue()`
- `writeDoFValue()`
The rationale for not *just* providing a function such as e.g. `accessDoF()`, which returns a reference to the data item, is to be able to implement the two functions also for our `CSFVectorFunction`s, as in that case no underlying dof-vector exists, which could be referenced.
# DoFIdentifiers
A DoF is identified by a corresponding *DoFIdentifier* object. In the case of a `P1DoFIdentifier` this, e.g., is a class storing the following
three pieces of information: level to work on, ID of associated primitive and the integer index into the data array for the function.
```c++
class P1DoFIdentifier : public BaseDoFIdentifier
{
public:
P1DoFIdentifier(){};
~P1DoFIdentifier(){};
PrimitiveID primitiveID_;
uint_t level_;
uint_t arrayIndex_;
bool operator==( const P1DoFIdentifier& other ) const
{
return ( primitiveID_ == other.primitiveID_ ) && ( arrayIndex_ == other.arrayIndex_ ) && ( level_ == other.level_ );
}
};
```
# DoFIterators
In order for the user to allow to work with the accessors, the idea is to have **iterators** which can be used to "loop" over all degrees of freedom of a specific function class. Note that this is local, i.e. the iterator only treats dofs/primitives owned by the corresponding MPI process. Currently the draft implements to iterators:
- `P1DoFIterator`
- `EdgeDoFIterator`
In order to demonstrate the validity and usefulness of the concept there are two tests:
- `DoFIterator+AccessTest.cpp`: demonstrates the basic use of the concept and checks that we can iterate over all DoFs (externally)
- `CSFVectorFunctionMagnitudeTest.cpp`: Implements the `getMaxMagnitude()` functionality that is currently missing from the `CSFVectorFunction` class using the dof accessor idea.
# Remarks
- Note that this is only a demo implementation. Hence there is much room for improvement. Especially the iterators should be improved, if we want to go with this approach.
- Another questions is, whether an iterator should also provide a flag to only include certain primitives, in the same way as e.g. the `interpolate()` and `apply(()` methods.
- For full usability one would often also need to obtain the micro-coordinates for a DoF (if avalaible for the corresponding FE function representation). This could be handled in multiple ways
- as part of a specialised iterator that adds this info to the dof identifier
- by a separate query method
- as a secondary `readDoFValue()` function that also returns the coordinates
Please feel free to comment.Marcus MohrMarcus Mohrhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/600Allow asking a Primitive for its type2023-05-19T17:19:54+02:00Marcus MohrAllow asking a Primitive for its typeIn most of our current algorithms we (implicitely) know what type of primitive we are dealing with, i.e. whether we are working on a `Cell`, `Face`, `Edge` or `Vertex`. This largely results from the fact that we ask a `PrimitiveStorage` ...In most of our current algorithms we (implicitely) know what type of primitive we are dealing with, i.e. whether we are working on a `Cell`, `Face`, `Edge` or `Vertex`. This largely results from the fact that we ask a `PrimitiveStorage` object to provide us with all local primitives of a certain type, e.g. via `PrimitiveStorage::getFaces()`.
Still to me it feels strange that we can neither query an object of type `Primitive` to obtain its type, nor that this is encoded in its associated `PrimitiveID`. There are some situations, where we might not (implicitely) know what kind of primitive we are dealing with. An example at the moment would be the migration of primitives between MPI processes. As a consequence of this the `PrimitiveStorage` class defines its own `PrimitiveTypeEnum` and provides a `getPrimitiveType()` method, which, presented with a `PrimitiveID` will return the type of the primitive, if this is either present locally, or in the immediate neighbourhood. If not, it will return `INVALID`.
The idea of this MR is to equip the `Primitive` class itself with a `PrimitiveTypeEnum` type that only has the values `CELL`, `FACE`, `EDGE` and `VERTEX` and a pure virtual function `Primitive::getType()` that can be used to query this. The latter is then easily implemented in the child classes.
The MR preserves `PrimitiveStorage::PrimitiveTypeEnum`, because I did not want to add a special situation `INVALID` enum to `Primitive::PrimitiveTypeEnum`. The former quasi extends the latter, based on fixed int values, so that we can cast the former into the latter.
That feels not ideal, but I am too unfamiliar with the details of primitive migration to understand, why we might want to send a nullptr together with an `INVALID` from one process to another, to change that.
Cheers
MarcusMarcus MohrMarcus Mohrhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/597Add function for writing blended coarse mesh2023-05-12T10:04:52+02:00Daniel BauerAdd function for writing blended coarse meshWith this MR we can visualize meshes on the physical domain.
![image](/uploads/2412529a9f21b3c4d7b2c3d6cacd1f7a/image.png)
Edit: Now, VTP and poly lines are used.With this MR we can visualize meshes on the physical domain.
![image](/uploads/2412529a9f21b3c4d7b2c3d6cacd1f7a/image.png)
Edit: Now, VTP and poly lines are used.Daniel BauerDaniel Bauerhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/594Allow use of isoparametric elements in VTKOutput for P2Functions2023-06-22T17:38:46+02:00Marcus MohrAllow use of isoparametric elements in VTKOutput for P2FunctionsThe merge introduces a change to the functionality of the `VTKOutput` class. When writing `P2(Vector)Function`s the default now is to use *VTK_QUADRATIC_TRIANGLE* or *VTK_QUADRATIC_TETRA* as cell type.
The old way to export these functi...The merge introduces a change to the functionality of the `VTKOutput` class. When writing `P2(Vector)Function`s the default now is to use *VTK_QUADRATIC_TRIANGLE* or *VTK_QUADRATIC_TETRA* as cell type.
The old way to export these functions as `P1Function`s on a refined mesh is for the moment still supported and can be activated by calling
- `setUseVTKQuadraticTriangle( false )` or
- `setUseVTKQuadraticTetra( false )`
on the corresponding `VTKOutput` object.
Comparison of the old versus the new approach looks good so far. In the following figures the left part shows a visualisation with the old and the right with the new approach:
![VTK_Quadratic_Triangle-partialAnnulus](/uploads/7fc7c7ed185be1f2fd4bd6ab77057d21/VTK_Quadratic_Triangle-partialAnnulus.png)
![VTK_QUADRATIC_TETRA_3TETS_LVL2-v2](/uploads/3a5ce647b6dca79acc120c590bca1df5/VTK_QUADRATIC_TETRA_3TETS_LVL2-v2.png)Marcus MohrMarcus Mohrhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/585Add isIdentity and isAffine to GeometryMap2023-04-20T17:38:29+02:00Daniel BauerAdd isIdentity and isAffine to GeometryMapFixes hyteg/hyteg#208.Fixes hyteg/hyteg#208.Daniel BauerDaniel Bauerhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/584Enriched Galerkin functionspace2023-04-19T19:31:44+02:00Fabian BöhmEnriched Galerkin functionspaceAdds the Enriched Galerkin discretization to HyTeG, contained in directory src/hyteg/egfunctionspace:
- Forms for mass, div, divt, Laplacian and epsilon
- corresponding operators with and without Nitsche-type boundary conditions (Nits...Adds the Enriched Galerkin discretization to HyTeG, contained in directory src/hyteg/egfunctionspace:
- Forms for mass, div, divt, Laplacian and epsilon
- corresponding operators with and without Nitsche-type boundary conditions (Nitsche-operators are preferred due to their symmetry)
- a Stokes-function and operators in directory src/hyteg/composites
- interpolation operators between DG and CG of first degree with P1toDGOperator in directory src/hyteg/dgfunctionspace
- additional addVolumeGhostlayer functionality in vertexDoFFunction required in P1toP0Operator and P0toP1Operator
Two benchmarks with strongy varying viscosity from literature reside in apps/2022-eg-varvisc.
tests/hyteg/egfunctionspace contains tests for operator symmetry, forms, matvec/apply, basic operations of EGFunction and convergence tests.https://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/574add MPI Version to buildInfo2023-03-20T18:11:39+01:00Dominik Thoennesdominik.thoennes@fau.deadd MPI Version to buildInfohttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/565VolumeDoF Packinfo 2D (pack + unpack)2023-02-10T20:19:46+01:00Nils KohlVolumeDoF Packinfo 2D (pack + unpack)Nils KohlNils Kohlhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/553Disentangle VectorFunction dimension from hasGlobalCells()2022-12-16T18:11:35+01:00Marcus MohrDisentangle VectorFunction dimension from hasGlobalCells()After the merge we can construct P[12]VectorFunction objects that represent 3D fields living on 2D surfaces and export them to vtu-files.After the merge we can construct P[12]VectorFunction objects that represent 3D fields living on 2D surfaces and export them to vtu-files.Marcus MohrMarcus Mohrhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/552Add a SphericalElementFormMass2022-12-16T14:06:38+01:00Marcus MohrAdd a SphericalElementFormMassThis merge demonstrates that we can successfully apply an ElementwiseOperator to a scalar function on a 2D surface in 3D.This merge demonstrates that we can successfully apply an ElementwiseOperator to a scalar function on a 2D surface in 3D.Marcus MohrMarcus Mohrhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/549Add Nedelec edge elements of type I and order 12022-12-16T17:55:09+01:00Daniel BauerAdd Nedelec edge elements of type I and order 1Nedelec elements [1] are implemented in class `N1E1VectorFunction`.
They are useful for problems in H(curl).
The notation follows the Periodic Table of the Finite Elements [2].
Additionally, the hybrid smoother by Hiptmair [3] is impleme...Nedelec elements [1] are implemented in class `N1E1VectorFunction`.
They are useful for problems in H(curl).
The notation follows the Periodic Table of the Finite Elements [2].
Additionally, the hybrid smoother by Hiptmair [3] is implemented.
[1] J. C. Nedelec, “Mixed finite elements in ℝ3,” Numer. Math., vol. 35, no. 3, pp. 315–341, Sep. 1980, doi: [10.1007/BF01396415](https://doi.org/10.1007/BF01396415).<br>
[2] D. N. Arnold and A. Logg, “Periodic Table of the Finite Elements,” SIAM News, Nov. 2014. Accessed: Jul. 04, 2022. [Online]. Available: https://www-users.cse.umn.edu/~arnold/femtable<br>
[3] R. Hiptmair, “Multigrid Method for Maxwell’s Equations,” SIAM J. Numer. Anal., vol. 36, no. 1, pp. 204–225, Jan. 1998, doi: [10.1137/S0036142997326203](https://doi.org/10.1137/S0036142997326203).Daniel BauerDaniel Bauerhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/544Demonstrators for working with Surfaces in 3D2022-11-29T16:33:06+01:00Marcus MohrDemonstrators for working with Surfaces in 3DMotivated by the issue that led to [6b4c8e95] I tested the possibility to work with **3D surfaces** in HyTeG. As it turns out this works at least partially. We can construct them, use them to generate function objects, interpolate expres...Motivated by the issue that led to [6b4c8e95] I tested the possibility to work with **3D surfaces** in HyTeG. As it turns out this works at least partially. We can construct them, use them to generate function objects, interpolate expressions into the associated FE spaces and output the functions for visualisation correctly.
I added a tiny `3DSurfaceDemo` app to show that and adapted the `SPHdemo` to allow computing the spherical harmonics only on a thin shell:
![SphericalHarmonic-deg5-order3](/uploads/63b5bf62f189c0db14ccfe0786326ebc/SphericalHarmonic-deg5-order3.png)
What I did not test so far is anything operator related, though.
Cheers
MarcusMarcus MohrMarcus Mohrhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/535Resolve issue #1842022-12-06T16:25:39+01:00Marcus MohrResolve issue #184The merge will make the evaluate() and evaluateGradient() methods of P[12]Function and DGFunction expect physical instead of computational coordinates. Additionally it fixes the problem with piecewise defined blending maps described as p...The merge will make the evaluate() and evaluateGradient() methods of P[12]Function and DGFunction expect physical instead of computational coordinates. Additionally it fixes the problem with piecewise defined blending maps described as part of issue #184.Marcus MohrMarcus Mohrhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/531Micro-cell refinement: function to compute fine-level micro-cell indices.2022-10-31T20:19:23+01:00Nils KohlMicro-cell refinement: function to compute fine-level micro-cell indices.Nils KohlNils Kohlhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/529Implement AffineMap[23]D::evalFinv() amd fix/extend AffineMap3DTest2022-10-25T21:55:36+02:00Marcus MohrImplement AffineMap[23]D::evalFinv() amd fix/extend AffineMap3DTestMarcus MohrMarcus Mohrhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/524Adaptive mesh refinement for DG2022-08-31T11:28:46+02:00Nils KohlAdaptive mesh refinement for DGThis merge request adds the functionality to perform adaptive mesh refinement (AMR) in 2D for the discontinuous Galerkin method with hanging nodes.
At this point we are not feature complete, but the most important basic functionality is...This merge request adds the functionality to perform adaptive mesh refinement (AMR) in 2D for the discontinuous Galerkin method with hanging nodes.
At this point we are not feature complete, but the most important basic functionality is implemented. Especially 3D and parallel support is (yet) missing. The implementation is designed with these extensions in mind.
Most important changes:
**PrimitiveID tree structure**
Extended the internal representation to model tree-like relationships between IDs. Children of IDs can be created, ensuring that no duplicate IDs are created even in parallel settings. This is vital to parallel/distributed AMR. Similar to what is done in walberla's BlockID class but tailored to the requirements in HyTeG.
**PrimitiveStorage refinement**
Macro-primitives can now be refined, creating a hierarchy with potentially hanging nodes. The storage is now organized in a tree-like structure. Methods have been implemented that allow refinement while maintaining a 2:1 balance among neighboring volume macros.
**VolumeDoFFunction**
The VolumeDoFFunction has been extended to support the ghost-layer allocation and communication mechanisms required for DG AMR. Also various new indexing functions allow for translation of indices between macro- and micro-refinement levels.
**DG**
The DGOperator was augmented to take care of correct element integration and ghost-layer accesses so that AMR is now seamlessly integrated into the matrix-vector multiplication and sparse assembly.Nils KohlNils Kohlhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/518Adds computation of velocity boundary conditions from information on tectonic plates2022-07-05T19:27:52+02:00Marcus MohrAdds computation of velocity boundary conditions from information on tectonic platesThe merge adds functionality for compute plate velocities to the TerraNeo module. These plate velocities can be used to set velocity boundary conditions for the Stokes part of a mantle convection model.The merge adds functionality for compute plate velocities to the TerraNeo module. These plate velocities can be used to set velocity boundary conditions for the Stokes part of a mantle convection model.Marcus MohrMarcus Mohrhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/510Draft: Plate velocity computations2022-06-23T16:39:52+02:00Dominik Thoennesdominik.thoennes@fau.deDraft: Plate velocity computationsAdds a first draft for computing plate velocities for mantle convection simulations from reconstructed plate motions. The draft
is originally based on
[https://gitlab.lrz.de/marcus.mohr/plates-refactoring/-/tags/HYTEG_INCLUSION_CANDIDA...Adds a first draft for computing plate velocities for mantle convection simulations from reconstructed plate motions. The draft
is originally based on
[https://gitlab.lrz.de/marcus.mohr/plates-refactoring/-/tags/HYTEG_INCLUSION_CANDIDATE_1](https://gitlab.lrz.de/marcus.mohr/plates-refactoring/-/tags/HYTEG_INCLUSION_CANDIDATE_1)Marcus MohrMarcus Mohrhttps://i10git.cs.fau.de/hyteg/hyteg/-/merge_requests/505GKB merge2022-08-30T14:11:44+02:00Fabian BöhmGKB mergeAdds access/implementation of two versions of the Golub-Kahan Bidiagonalization (GKB) solver to HyTeG:
- the GKB implementation from PETSc can be run via PETScBlockPreconditionedStokesSolver
- an own implementation of GKB on HyTeGs dat...Adds access/implementation of two versions of the Golub-Kahan Bidiagonalization (GKB) solver to HyTeG:
- the GKB implementation from PETSc can be run via PETScBlockPreconditionedStokesSolver
- an own implementation of GKB on HyTeGs datastructures in GKBSolver.hpp
Adds an augmented Lagrangian operator used by the HyTeG implementation of GKB
Adds python scripts for the work unit calculation of solver configurations