Installation Instructions


The following instructions concern the 20.01 version.

The installation process implies running a set of command lines from a terminal window. A terminal window can be easily opened in Ubuntu by using the “CTRL+ALT+T” key combination.

In this document, all the commands to be processed in terminal are formatted as below. The different command lines can easily be copy-pasted (line by line) from this document.

# This is the formatting for a terminal window.
# A sample command is given below (it has no effect).
echo ZephyCloud rocks!

will output:

ZephyCloud rocks!


The installation process needs to have access to some administration permissions to make installation possible. Each time a command starting with “sudo” will be processed, the user will be asked to input their Ubuntu password.

Software Installation

- Download ZephyTOOLS installation archive and extract it

You can download the latest installation archives from your ZephyCloud Dashboard.

- Configure and Install

In the following, we consider that the archive has been extracted to /path/to/extracted/archive directory. Start by opening a terminal in this folder, or go to it from an existing terminal using:

cd /path/to/extracted/archive

Install the needed dependencies (cf Dependencies for details on what will be installed) by running the configuration bash script corresponding to your Linux distribution:


sudo bash

Finally, install ZephyTOOLS by running the following command:


By default, ZephyTOOLS is installed in $HOME/WRA/

- Start ZephyTOOLS

A ZephyTOOLS shortcut is now created on your desktop.


ZephyTOOLS can also be launched from a terminal window with the command:


With XX.XX the version number (eg. 20.01).


ZephyTOOLS functions are often based on other open-source softwares.

This section reports all packages which have to be installed for your machine to be able to run ZephyTOOLS, for informative purposes.


Easily install all these dependencies by using the bash script available in the installation archive

apt installations

All the following dependencies are to be installed with the sudo apt install command (requires administration permissions), followed by the package name(s).

Note that you can specify several package names after the command, that way you can install several packages at once.

Library Description Package name
PyGTK Graphical User Interface Libraries python-gtk2-dev
GtkSourceView (version 2.10.1) allows text editing in Graphical User Interface python-gtksourceview2
gmsh unstructured mesh generator gmsh
TeX Live used to generate the pdf reports through LaTeX texlive-full or for a smaller download: texlive-xetex texlive-lang-chinese texlive-lang-french texlive-lang-spanish texlive-math-extra cm-super dvipng texlive-fonts-recommended
GDAL used to handle geo-referenced files python-gdal
Paraview 3D Visualizations paraview-python
binfmt support for extra binary formats binfmt-support
webkit used to display the html reports in the Graphical User Interface python-webkit [1]
Others   libgladeui-dev python-gtkglext1 libcanberra-gtk-module ffmpeg inxi python-poppler gfortran-multilib libgfortran3 xterm curl



In recent Ubuntu releases, the python-webkit package is not available in the default repository anymore. To access it, you may have to run:

sudo apt-get update

pip installations

All the following python packages are to be installed with the sudo pip install command (requires administration permissions), followed by the package name(s).

Note that you can specify several package names after the command, that way you can install several packages at once.

Library Description Package name
NumPy Array processing for numbers, strings, records, and objects. numpy
Matplotlib Python plotting library which produces most of the figures in ZephyTOOLS matplotlib==2.2.2 --no-binary=matplotlib [2]
SciPy Scientific Library for Python scipy
Sphinx used to generate the documentation and the html reports docutils & sphinx
Pandas Powerful data structures for data analysis, time series, and statistics pandas==0.24.2
psutil cross-platform process and system utilities module for Python psutil
Shapely Manipulation and analysis of geometric objects in the Cartesian plane shapely
Boto Amazon Web Services SDK for Python boto
wget Downloads for Python wget
pysftp SFTP transfer for Python pysftp
slumber Interface to ReSTful APIs slumber
geopy Geocoding web services geopy
pyshp ESRI Shapefiles handling pyshp
simplekml Google earth kml format handling simplekml
fiona GIS files I/O fiona
Reverse Geocoder takes a latitude / longitude coordinate and returns the nearest town/city reverse_geocoder


[2]Since ZephyTOOLS uses gtk2 for its GUI, it is necessary to use these options when installing Matplotlib to ensure compatibility.


ZephyCFD uses OpenFOAM open-source solver as the software CFD core. It is mandatory to install OpenFOAM prior installing ZephyTOOLS.

ZephyCFD is only compatible with the latest OpenFOAM release. It is not possible to use any other previous version of OpenFOAM.

OpenFOAM needs to be installed on all machines to be used for running the CFD computations: The use of the “Extern Calculations” feature implies OpenFOAM to be installed on the extern machines as well.

Legal Notices

This offering is not approved or endorsed by OpenCFD Limited, the producer of the OpenFOAM software and owner of the OPENFOAM® and OpenCFD® trade marks.


Refer to OpenFOAM® website for more information about OpenFOAM software.

OpenFOAM Installation process

OpenFOAM and ParaView can be simply installed using the apt package management tool. The user will need to provide superuser password authentication when executing the following commands with sudo

echo 'deb artful main' >> /etc/apt/sources.list
sudo sh -c "wget -O - | apt-key add -"

Update the apt package list to account for the new download repository location

sudo apt update

Install OpenFOAM (6 in the name refers to version 6.x) which also installs paraviewopenfoam54 as a dependency.

sudo apt -y install openfoam6

OpenFOAM 6 and ParaView 5.4 are now installed in the /opt directory.


For installation problems please visit OpenFOAM® website.

Handling several installed OpenFOAM versions

For old users of OpenFOAM and ZephyTOOLS, please also make sure to unlink the environment with the previously installed versions of OpenFOAM.


ZephyTOOLS does not require anymore OpenFOAM path to be sourced before its start, so that it is not important to specify any path to source. Nevertheless, it keeps important to check that no other previous OpenFOAM version is automatically sourced before latest OpenFOAM is compiled.

Check the tail of your ~/.bashrc file with:

gedit ~/.bashrc &

In the text editor, remove all the lines related to older versions of OpenFOAM. These lines can also become ignored by adding a “#” at the beginning of the corresponding line(s).

Add the following line in your ~/.bashrc file:

source /opt/openfoam4/etc/bashrc

Save your modifications.

Windows Users

Windows 10

ZephyTOOLS’s windows version is based on the Windows Subsystem for Linux (WSL). The following requirements are necessary for the installation:

  • Windows 10 with its latest updates (at least Fall Creator update).
  • 8 GB of hard disk space on your C: drive.
  • WSL enabled or admin-rights to enable it.

If you are working on an older version of Windows, you can consider using a Virtual Box.

Download the ZephyTOOLS.XX.XX.installer.exe file from your ZephyCloud Dashboard. (XX.XX being the version of ZephyTOOLS).

Execute the file and follow the instructions. The installer is able to manage several parallel ZephyTools installations.


Review the license terms and click “I Agree” to continue.


You can choose to install ZephyTOOLS just for you, or for all computer’s users.


Decide which component you want to include in the installation, by checking them (Start Menu shortcut, Desktop shortcut).


Choose the location of ZephyTOOLS. By default, it will be installed at C:\Program Files\ZephyTOOLS\XX.XX. Then click on Install.



Special actions

The Windows version has two special actions, accessible on right-click from the taskbar:

  • Force quit: kill the application the hard way. It can be useful if the software freezes.
  • Show logs: Open the .cache/zephytools/zephytools.log file located in the user home folder. It can be useful to report bugs.

Virtual Box

Here is how to set up a virtual Ubuntu environment to host ZephyTOOLS on any Windows version.

Install Oracle VM Virtual Box: Download the installation package on Virtual Box Website (choose the latest version).


Download the *.ova file provided by your ZephyScience contact.


Import the Virtual Box: from File -> Import Appliance, Select the downloaded file.


Make sure Internet can be accessed on your Guest OS.

You can now log on ZephyTOOLS using the icon on your Desktop.


For the Guest OS -> Login: zephy | Password: cloud


How to get icons in sub-menus?

gsettings set org.gnome.desktop.interface menus-have-icons true

Replace default Ubuntu shortcut for Head Up Display feature

This feature is useless with ZephyTOOLS. It also interferes with ZephyTOOLS shortcut system. ALT should be made free to let ZephyTOOLS use it. From System Settings - Keyboard panel, it can be replaced with ALT+F3 (for instance).


Disable IBus Keyboard input method system

In “System Settings - Language Support” panel, switch from “IBus” to “none”.



How to uninstall on Linux

To uninstall ZephyTOOLS, simply delete the corresponding folder under home/WRA/:

rm -r WRA/ZephyTOOLS_XX.XX/

With XX.XX the version number (eg. 20.01).

How to uninstall on Windows

On Windows, you can uninstall ZephyTOOLS from the Application Management page. You can also suppress the ZephyTOOLS folder under C:Programs and the WRA folder under C:Users.