PALM - A PArallelized Large-Eddy Simulation Model for Atmospheric and Oceanic Flows

PALM is a large-eddy simulation (LES) model for atmospheric and oceanic flows which is especially designed for performing on massively parallel computer architectures. PALM is free software. It can be redistributed and/or modified under the terms of the GNU General Public License (v3).

A PALM simulation using the letters "PALM" as surface heat flux pattern. Check out the gallery for more movies!

Some of PALM's highlights are

• excellent scaling, so far tested up to 32000 cores
• online data analysis (during model runs) in order to avoid I/O bottlenecks
• topography realized on cartesian grid (allows for steep topography)
• non-cyclic horizontal boundary conditions including turbulent inflow
• code can be switched to ocean version with salinity equation and equation of state for seawater
• embedded parallelized Lagrangian particle model for various applications (footprint calculation, simulation of cloud droplet growth, visualization, etc.)
• interface which allows users to plug in their own code extensions without modifying the default code
• advanced shell scripts for installing and running the code in interactive and batch mode are available
• code is permanently maintained and improved by the PALM group and other users; code management is based on subversion

Access

If you are interested in using or just testing the code, just send an ​email including a username and a password that you like to use to access the code. This account will also allow you to login on this trac-server, e.g. to submit trouble tickets, or to edit the wiki, if you have proper access permissions. As a registered user, you will also be informed about new PALM updates by email.

We appreciate any comments on the contents of this server which may help us to improve our documentation. Please contact us by ​email or just send a ticket, if you are a registered user.

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News from the PALM Group

[ 2012/12/11 ] A new animation of dust devils has been added to the gallery
[ 2012/10/23 ] Watch the presentation 'Atmosphärische Turbulenz sichtbar machen' at IdeenExpo 2011 ​here (in german)
[ 2012/10/22 ] Code has been put under the GPL starting from version 3.9 (r1036)
[ 2012/09/03 ] New movies on the development of cumulus clouds can now be found in our gallery. (see here)

Latest PALM Revision Change

[ 2021/03/04 ] by user banzhafs (removed unnecessary informative message and unused code from chemistry_model_mod, see changeset)