PyParticles
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.
Docs:
http://simon-r.github.com/PyParticles/index.html
Features
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
- Midpoint
- Stormer Verlet method
As a forces model it includes:
- Gravity
- Particle by Particle spring
- Constant
- User defined field
- Lennard Jones
Modeling of 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.
Requirements
http://scipy.org/Download
http://scipy.org/Download
http://pyopengl.sourceforge.net/
http://matplotlib.org/
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:
pyparticles_app
Start a simulation described in a config file
pyparticle_app <file_name>
Start the specified demo simulation
| Demos | |
|---|---|
| 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 (shold be improved) |
pyparticles_app --demo springs pyparticles_app --demo solar_system pyparticles_app --demo bubble pyparticles_app --demo cat_spri pyparticles_app --demo gas_lj
Write out a model config file
pyparticle_app -m
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
