Introduction

Elmer is an open source (GPL) computational tool for multi-physics problems. It is developed by CSC in collaboration with Finnish universities, research laboratories and industry. To test ONELAB models working with OpenFOAM, you shall need a working installation of the code. The easiest way to do so, is to install first the generic ONELAB virtual machine on your system by following these instructions. When done, log in into the virtual machine (username: "olvm", passwd: olvm) and proceed with the installation of Elmer, and the download of benchmark ONELAB models. Instructions to do so are given in the next section.

Installation

The Virtual machine is configured so that Gmsh and OpenFOAM can be installed straightforwardly by issuing simple commands in a terminal. Proceed as follows.

Step 1 - Download installation scripts: Open a terminal by clicking on the "terminal" icon in the launcher panel and issue the command; install_scripts.sh

Step 2 - Install Gmsh and Onelab: Then the command; install_gmsh.sh; downloads the nightly-build of Gmsh from http://geuz.org/gmsh, install it, and place a Gmsh icon on the Desktop.

Step 3 - Install Elmer: The command; install_foam.sh; downloads the source code of Elmer and compile it on the virtual machine. This may take several minutes.

After these 3 steps, you have a woking installation of Gmsh and OPenFOAM on the virtual machine.

Step 4 - Download model examples: The model examples detailed in the next section are downloaded in a directory named ELMERMODELS with the command; getFoamModels.sh.