PyParticles is a particle simulation toolbox entirely written in python.
The main objective of PyParticles is to provide a system API simple and fast to use. Furthermore is to provide a basic application for the implementation of simple models.
Simulate a particle by particle model with the most popular integrations methods, and it represents the results on a OpenGL or Matplotlib plot.
PyParticle includes the followings integrations methods
- Euler method
- Leap Frog method
- Rung Kutta method
- Stormer Verlet method
As a forces model it includes:
- Particle by Particle spring
- User defined field
- Lennard Jones
- Electromagnetic fields
We have also the possibility of modeling the forces with user-defined constraints (See demo cat_spri).
PyParticle offers an easy to use class structure with a fully interchangeable integrations method or force model, it also implements the possibility to add some boundary model.
For more details about the installation visit the Blog: http://pyparticles.wordpress.com/installation/
Command line tool usage:
In PyParticles a simulation model is entirely described in a config file that should be edited by the user.
The following are the main command of the PyParticles application.
- Start the demo simulation:
- Start a simulation described in a config file
- Start the specified demo simulation
|springs||3 body springs|
|solar_system||Simulation of the solar system with realistic magnitudes|
|bubble||Bubbles. With a non realistic force|
|cat_spri||Vibrating string with gravity and air drag|
|gas_lj||Lennard jones gas model (should be improved)|
|fountain||250'000 particles fountain|
pyparticles_app --demo springs pyparticles_app --demo solar_system pyparticles_app --demo bubble pyparticles_app --demo cat_spri pyparticles_app --demo gas_lj pyparticles_app --demo elmag_field pyparticles_app --demo fountain
- Start a testing procedure
Execute the specified test:
pyparticles_app --test harmonic pyparticles_app --test fall
- Write out a model config file
- Print out the help and version
pyparticles_app --help pyparticles_app --version
During the simulation you can toggle the help message by pressing h
Config file Example:
[pset_origin] media_origin = from_file file_name = solar_sys.csv [set_config] len_unit = 149597870700.0 mass_unit = 5.9736e24 boundary = open [model] force = gravity ode_solver_name = euler time_step = 3600 steps = 1000000 force_const = 6.67384e-11 force_vector = 0 0 0 [animation] animation_type = opengl xlim = -5.0 5.0 ylim = -5.0 5.0 zlim = -5.0 5.0