3rd September 2021

OpenFOAM v9 | Patch Releases

Patched versions of the openfoam9 pack have been released for the following versions of Ubuntu Linux, 64 bit:

  • 18.04 LTS, codename bionic
  • 20.04 LTS, codename focal
  • 21.04, codename hirsute
  • 21.10, codename impish (since patch release v9.20211122)
  • 22.04 LTS, codename jammy (since patch release v9.20220602)

See the Download v9 | Ubuntu page for installation and upgrade instructions.

The packs can be installed or upgraded on Windows 10 and have been used to update the installations for other Linux and macOS platforms that use Docker to provide a self-contained environment, see Download v9 | Linux and Download v9 | macOS.

The Patch Releases of OpenFOAM 9 are: 20210903, 20211007, 20211122 and 20220602

Subversion Numbering

The OpenFOAM Foundation maintains two public repositories of source code of OpenFOAM:

The openfoam9 packs include the source code of OpenFOAM.  Each pack has a subversion number represented by the packaging date in YYYYMMDD format.   For example, a user can list the subversions of the openfoam9 packs by the following command:

apt-cache policy openfoam9

This writes text, e.g. for the initial release and first patched versions of OpenFOAM-9:

  Installed: 20211007
  Candidate: 20211122
  Version table:
     20211122 500
        500 focal/main amd64 Packages
 *** 20211007 500
        500 focal/main amd64 Packages
        100 /var/lib/dpkg/status
     20210903 500
        500 focal/main amd64 Packages
     20210719 500
        500 focal/main amd64 Packages

Source Code of a Subversion

The OpenFOAM-9 repository is tagged with the subversion number so that users can reference the source code corresponding to a particular pack exactly.  Using the tag, the corresponding source code can be obtained either as a tar.gz archive or using Git.

The patched versions can be viewed in a browser at with links to download the archived sources.   For example, to download the patch version 20211007, the user can click the link labelled 9.20211007.  After downloading and extracting the archive, it is recommended to be renamed without the subversion number.  From the command line the download, extraction and renaming can be done by:

wget -O - | tar xvz
mv OpenFOAM-9-* OpenFOAM-9

The same source code can be obtained from the repository using Git, e.g.

git clone
cd OpenFOAM-9
git checkout tags/20211007