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OpenFOAM-1.6-ext is a formal release of the community developments in the OpenFOAM software library, following the establishment of the -Extend Project and web portal.
This release includes many improvements, including an automatic test harness which provides basic quality control by running OpenFOAM over a growing suite of tutorials and test cases.
OpenFOAM-1.6-ext is compatible with the OpenFOAM-1.6.x and 1.7.1 versions of the code and incorporate most developments and changes from above versions and ensure top-level compatibility. In some cases, the differences are caused by bug fixes and algorithmic improvements, considered more important than inter-operability.
The list of developments is a result of the work of numerous contributors. The Extend Project Admins would formally like to thank all contributors; the list will be updated with further code development
Improvements in accuracy and stability on tetrahedral and tet-dominant meshes Implicit coupled multi-domain solver Block-implicit multi-equation matrix support Proper Orthogonal Decomposition (POD) data analysis tools Rewrite of Ordinary Differential Equation (ODE) and ODE solver classes Dynamic remeshing classes, based on tetrahedral edge swapping Radial Basis Function interpolation and mesh motion classes Turbomachinery features: GGI interface, cyclic GGI, partial overlap GGI Parallelisation of topological change engine Support for parallelisation and topological changes in the Finite Area Method Library preparation for Python/Swig interface for OpenFOAM: VulaSHAKA project (http://sourceforge.net/projects/vulashaka/) Basic implementation of OpenMP wrapping for multi-core support
This section lists the applications that existed in versions of OpenFOAM but were abandoned by OpenCFD due to lack of expertise. In some cases, code may still be present but it is buggy or unusable. The -Extend project line maintains, validates and develops the features in contact with original authors and contributes new features and bug fixes.
Working parallel point mesh and field tools, shared between interpolation and FEM discretisation solvers FEM-based automatic mesh motion solver, with working parallelisation Dynamic mesh features and topological mesh changes The Finite Area Method: parallelisation, volume-to-surface mapping New generation of linear equation solvers, including accelerated AMG
Basic 6-degree-of-freedom (6-DOF) solver POD solver tools: prototype Demonstration solver for fully implicit block-matrix coupling
New parallel decomposition and reconstruction formulation, with support for topologically changing meshes Level-set support tools
Transport models and top-level solver for visco-elasto-plastic flows Updates to internal combustion engine simulation tools Updated version of free surface tracking tools for free surface flows Updated fluid-structure interaction solver with parallelisation support Updated stress analysis tools, new large deformation solver formulation
Integrated automatic and publicly available test harness with ~150 cases http://openfoam-extend.sourceforge.net/CDash/index.php Community-driven test-case base to enhance code quality and integrity. Contributions under http://www.extend-project.de/project-final/openfoam-extend-test-harness
The number of cumulative bug fixes compared to OpenFOAM-1.6.x is over 5000; we will stop counting.