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Extend Project Release OpenFOAM-1.6-ext

Posted By: Hrvoje Jasak
Date:Fri, 26 Nov 2010, 2:14 p.m.

The Extend Project Release 1.6-ext

The OpenFOAMĀ®-Extend Project ( announces the release of version 1.6-ext, in the line of previous -dev community releases.

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.

Fundamental developments

* 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 analyss 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 (

* Basic implementation of OpenMP wrapping for multi-core support

Ongoing developments

This section lists the applications that existed in versions of OpenFOAM but were abandoned by OpenCFD due to lack of expertise/resources. 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

Developments to solvers (applications)

* Basic 6-degree-of-freedom (6-DOF) solver

* POD solver tools: prototype

* Demonstration solver for fully implicit block-matrix coupling

Developments to utilities

* New parallel decomposition and reconstruction formulation, with support for topologically changing meshes

* Level-set support tools

Model development

* 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

Quality control

* Integrated automatic and publicly available test harness with ~150 cases


* Community-driven test-case base to enhance code quality and integrity.

* Contributions under


Other The number of cumulative bug fixes compared to OpenFOAM-1.6.x is over 5000; we will stop counting.


You can access the public git repository at:

git clone git://

Binary release for the Linux and Mac OS X version, Debian rpm packages and bootable USB stick are in preparation and will be available for download from the SourceForge server.

For further details, please see the README file in the release or visit the Extend project portal:

OpenFOAM-Extend Project

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