OpenFOAM

According to Wikipedia:

OpenFOAM (for "Open source Field Operation And Manipulation") is a C++ toolbox for the development of customized numerical solvers, and pre-/post-processing utilities for the solution of continuum mechanics problems, including computational fluid dynamics (CFD).

Installation

Basic

If you do not plan on doing development tasks with OpenFOAM, there is an updated version of the program available as openfoam-org^AUR and git versions openfoam2.4-git^AUR or openfoam3.0-git^AUR. For most users, this will be everything needed to get an installation up and running.

Development

For installation of OpenFOAM in a development environment, the process is fairly straight forward on Arch Linux. The basic steps are as follows:

Obtain source files from OpenFOAM
Prepare build directory
Create Preference File and Set Environment Variables for your installation
Compile OpenFOAM sources
Test OpenFOAM installation

Prerequisites

Obtain source files

Since OpenFoam is a picky about its location, create a directory following its naming convention and extract the source code there:

mkdir $HOME/OpenFOAM
wget -P $HOME/OpenFOAM https://dl.openfoam.com/source/v2206/OpenFOAM-v2206.tgz
tar -xvfz $HOME/OpenFOAM/OpenFOAM-v2206.tgz -C $HOME/OpenFOAM

Environment variables

Paste the following code into your .bashrc file. Whenever you want to run OpenFOAM you just have to run of2206 to initialize the environment. This has to be done prior to compilation.

Compilation

Run of2206 to initialize the environment. Use to check if all requirements are installed, then to change into the project directory. Then you can use the following command to compile:

This compiles with all cores (-j), reduced output (-s, -silent), with queuing (-q, -queue) and logs (-l, -log) that can be inspected later.

Testing

To test for successful installation, run any test case, for example:

foamInstallationTest -full incompressible/simpleFoam/pitzDaily

Troubleshooting

zsh

Some things do not work straightforward if you are not using bash. In the case of zsh, you will need the bash-completion package, and add the following to your .zshrc for the OpenFOAM scripts to work.

Add and to your and to your .

Paraview not installed

This happens because the dependencies are installed as separate packages, and not in the third-party apps directory of OpenFOAM. Either;

Add to your .
For each project, touch `echo "${PWD##*/}"`.foam and then open the touched file from paraview.

gollark: You can attend via chat interface.

gollark: I should really preconfigure something like this for *my* future birthday parties.

gollark: ↑ browser

gollark: ```html<!DOCTYPE html><input type=url id=i><iframe id=j></iframe><script>i.oninput = () => j.src = i.value</script>```

gollark: You should launch osmarksßbrowser™.