DLASim

The DLA simulator

This is a Diffusion Limited Aggregation (a fractal growth model) simulator,DLA was invented by two physicists, T.A. Witten and L.M. Sander , in 1981. The growth rule for these fractals is remarkably simple. We start with an immobile seed on the plane. A walker is then launched from a random position far away and is allowed to diffuse. If it touches the seed, it is immobilized instantly and becomes part of the aggregate. We then launch similar walkers one-by-one and each of them stops upon hitting the cluster. After launching a few hundred particles, a cluster with intricate branch structures results. We can modify the rules and get very intresting results, which are related to various physical phenomenons.

This project was started as because the project leader had to write a DLA simulation for one of his course assignments, which eventually led to this application been written and put up under the GPL license.

News

10th November 2005

The Website has been updated, all the links work and the project has an official face atlast. An SOS to all the people reading this, if they have the time please contribute and make this project a success.

5th November 2005

Version 1.0 of the program has been released. Please go through the documentation and links sections to learn more about the program.

Progress

Features Implemented

Basic DLA simulation(in continium)
Stickiness factor has been incorporated, please refer to standard text for this
Multiple seeds can be placed

Features Planned

Customizing the kill zone
Image saving capabilities
Automatic fractal dimension calculation
Allowing various probability distributions for the random walk variables