This software contains a Large-Eddy Simulation module for the PLUTO code for compressible flows, designed also for astrophysical application. It is freely distributed under a GNU General Public License with the following additional restrictions:

1) any published work which uses this software (journal papers, conference proceedings, technical reports, thesis) will cite the following papers describing the software and some of the principal scientific results obtained by using it, as well as the Philofluid website http://www.polito.it/philofluid/ and the PLUTO website http://plutocode.ph.unito.it/:

• D. Tordella, M. Iovieno, S. Massaglia, A. Mignone, "Large-eddy simulation of hypersonic flows. Selective procedure to activate the sub-grid model wherever small scale turbulence is present", Computer Physics Communications 184(12), 2651-2661, (2013).
• D. Tordella, M. Iovieno, S. Massaglia, "Small scale localization in turbulent flows. A priori tests applied to a possible Large Eddy Simulation of compressible turbulent flows", Computer Physics Communications 176, 539-549, (2007).
• A. Mignone, G. Bodo, S. Massaglia, T. Matsakos, O. Tesileanu, C. Zanni, A. Ferrari, "PLUTO: a numerical code for computational astrophysics", Astrophys. J. (2006).

2) electronic documents will include a direct link to the software page at http://www.polito.it/philofluid/software/

3) the user will send the developers (philofluid@polito.it) any modified version of the software.

We maintain this software that we want to make available without charge to anyone for academic, research, experimental or personal use. This license is designed to guarantee freedom to use the software for these purposes with the only constraint to give proper credit to our research group. This software is being distributed as a research tool and as such we encourage contributions from users that might be used or incorporated to make the code more stable, efficient, flexible, and/or useful. All contributions will be posted in the software page and made available to all the other users. For this reason we ask users who contribute to send us a copy so that the improved/extended software may be distributed together with the original versions.

In order to receive this software, please write an email to: info_philofluid@polito.it providing your Full name, Institution, Department, Address, Country, Email, Phone, Title/Position, Research interests and the same info for your Reference Person