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dice - create initial conditions of idealised galaxies
dice
dice.config
DICE is an open source code modelling initial conditions
of idealised galaxies to study their secular evolution, or to study more
complex interactions such as mergers or compact groups using N-Body/hydro
codes. The particularity of this code is its ability to setup a large number
of components modelling distinct parts of the galaxy. The code creates 3D
distributions of particles using a N-try MCMC algorithm which does not require
a prior knowledge of the distribution function. The gravitational potential
is then computed on a multi-level cartesian mesh by solving the poisson
equation in the Fourier space. Finally, the dynamical equilibrium of each
component is computed by integrating the Jeans equations for each particles.
Several galaxies can be generated in a row and be placed on Keplerian orbits
to model interactions. DICE writes the initial conditions in the Gadget1
or Gadget2 format and is fully compatible with Ramses thanks to a patch
included in the public ramses distribution.
DICE uses ascii files
as inputs. There is three kind of files to consider:
DICE configuration
files, which are the only argument you should give to DICE.
Galaxy parameters
files, which list all the physical parameters of each galaxy you want to
build.
Stream parameters files, which list all the physical parameters of
each stream you want to build.
Calling DICE should then look like this:
dice dice.config
$NEMO/usr/dice
mkplummer(1NEMO)
, magalie(1NEMO)
, mkkd95(1NEMO)
https://bitbucket.org/vperret/dice/wiki/Running%20DICE
Valentin Perret
14-nov-2017 man written PJT
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