Dear Colleague,

As you are a past user of the DL_MESO mesoscale simulation package I am sending 
you this email to announce the release of version 2.4 of DL_MESO. The new 
version contains Dissipative Particle Dynamics (DPD) and Lattice Boltzmann 
Equation (LBE) codes written in Fortran90 and C++ respectively, which can be run 
either in serial or in parallel, and an optional GUI written in Java.

New features in the DPD code include alternative thermostats (e.g. DPD Velocity 
Verlet, Lowe-Andersen), barostats, many-body (density dependent) interactions, 
Ewald sum electrostatics with exponential charge smearing, hard surfaces with 
soft repulsions and user-specifiable initial configurations using DL_POLY-
formatted CONFIG files. New features in the LBE code include a more efficient 
swap-based algorithm for lattice propagation, more accurate application of 
forces using the Guo algorithm, multiple-relaxation-time (MRT) schemes, 
incompressible fluids, additional boundary conditions, user-specifiable initial 
configurations and a greater choice of output file formats. Miscellaneous bug 
fixes have also be applied to both codes.

The new package is still free to academic users and can be obtained from the 
DL_MESO website at www.ccp5.ac.uk/DL_MESO or via the DL_MESO link on the CCP5 
site (www.ccp5.ac.uk). There you may register for the new version and be 
automatically sent the download instructions.

The future development of DL_MESO is dependent on its users and therefore any 
suggestions for new features, new working subroutines and utilities, simulation 
example cases for LBE and DPD etc. would be very welcome. If you wish to 
contribute, please email me at michael.seaton@stfc.ac.uk; any input files or 
program codes should be accompanied with a description and/or user instructions.

Michael Seaton
2011-06-01