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# OpenFOAM

From ArchWiki

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).

## Basic installation

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

## Development installation

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

1. Obtain source files from OpenFOAM
2. Prepare build directory
3. Create Preference File and Set Environment Variables for your installation
4. Compile OpenFOAM sources
5. Test OpenFOAM installation

### Prerequisites

- openmpi
- paraview
- parmetisAUR
- scotchAUR
- boost-libs
- boost

### Obtain source files

#### Latest stable release

This article or section needs expansion.

Reason: TODO (Discuss in Talk:OpenFOAM)

### Environment variables

Paste the following code into your ~/.bashrc file. Whenever you want to run OpenFOAM you just have to type of20x to initialize the environment.

    # OpenFOAM Install
    export FOAM_INST_DIR='$HOME/.OpenFOAM'
    alias of20x='source $FOAM_INST_DIR/OpenFOAM-2.0.x/etc/bashrc'

## 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.

    autoload bashcompinit
    bashcompinit

Add `export FOAM_INST_DIR=/opt/OpenFOAM` and `export BASH=/bin/bash` to your `.zshenv` and `alias ofoam="source ${FOAM_INST_DIR}/OpenFOAM-5.0/etc/bashrc"` to your `.zshrc`.

### 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 `alias paraFoam='paraFoam -builtin'` to your `/opt/OpenFOAM/Open-FOAM-X.X/etc/bashrc`.
- For each project, `touch `echo "${PWD##*/}"`.foam` and then open the touched file from paraview.

## See also

- Official website

Category:

- Science

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