CHANGELOG.md

6.0.3 (in preparation)

Features:

• Implemented OctTree for fast searching points and nodes

6.0.2

| Released on 2015/06/15, GitHub Release Link

Release notes

The second release of ogs6 introduces Neumann boundary conditions and VTK result output.

Features:

• Neumann boundary conditions
• Implement mesh properties for storage of data fields. This also includes mapped values (e.g. based on material id) PR #542, PR #644,
• Refactored mesh property classes to enable VTK output
• Extended the available elements to quadratic (e.g. Quad8) based on generalized "element rules". #572, PR #656, PR #657,
• Extend computation of shape matrices to lower dimensional elements embedded in higher dimensional space #655
• Builds with MinGW (GCC) on Windows, see Developer Guide and the new MinGW platform instructions
• Cross-compiling for Windows with MXE on Mac OS
• Support for new cross-platform IDE CLion
• Add gradual refinement to the structured mesh generator PR #539
• Add a command line tool "queryMesh" to search mesh information PR #665
• Add a command line tool "AddTopLayer" to add an additional top layer (for example a soil layer, see also the documentation) PR #649

Fixes

• Performance optimizations in VTK mesh conversion, PR #695
• Improve layered prism mesh construction
• Fix a lot of warnings on gcc/clang/msvc compilers improving the code

Infrastructure

• Test runtime is monitored at Jenkins for normal and nightly large tests
• Utilities are build by separate Jenkins Jobs, e.g. Win_Utils

Test examples

• Groundwater flow (Neumann):

Next steps

In development

• Heterogeneous fields (for e.g. hydraulic conductivity parameters)
• Octree data structures for fast searches
• OGS#PETSc interface for parallel computing

Planned

• Parallelization scheme using PETSc library
• Extending the linear elliptic solver to non-linear problems

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6.0.1

| Released 2015/03/02, GitHub Release Link

The 6th version of OpenGeoSys (OGS) is under way. After single and coupled FORTRAN modules in ROCKFLOW 1+2, the C version 3 with dynamic data structures, the object-oriented C++ parallelized version 4, completed with data integration and visualization tools by version 5; ogs6 - as an open source project - is aimed at performing on supercomputing platforms and providing complete workflows for solving of coupled multi-field problems in real world applications. The major paradigms of ogs6 are being developer-friendly, performing, and user-friendly.

Important links:

• Getting started tutorial: http://docs.opengeosys.org/docs/quickstart

• Descriptions of selected benchmarks: http://docs.opengeosys.org/docs/benchmarks

• Source code access: https://github.com/ufz/ogs

• Developer guide: http://docs.opengeosys.org/docs/devguide

Release notes

The first version ogs6 is dedicated for elliptic problems.

Features:

• Basic structures of processes
• Mathematical operations are based on Eigen3 library
• Linear solvers: DenseMatrix with Gauss elimination, and LIS (http://www.ssisc.org/lis/)
• XML based IO
• Standard finite element method (FEM)
• Available element types: lines, triangles, quads, hexahedra
• Dirichlet boundary conditions
• Linear elliptic solver (e.g. Groundwater flow) for scalar quantities in homogeneous media

Fixes

• DenseMatrix Gauss algorithm pivoting

Test examples

• Example 1: Unit square (access)
• Example 2: Unit cube (access): has 1000 hexahedra elements with Dirichlet boundary conditions (u=1|x=0) and (u=-1|x=1)

Next steps

In development

• OGS#PETSc interface for parallel computing (02/2015*planned)
• Neuman boundary conditions (03/2015*planned)

Planned

• Parabolic solver