Diffusion-Limited Aggregation: a Model for Computer Simulation of Fractal Growth

• Main Author: Green-Petersen, Minna
• Format: Others
• Language: English
• Published: KTH, Teoretisk fysik 2014
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146038

Diffusion-limited aggregation (DLA) is a model for computer simulation of particle aggregation. It is known to generate aggregates with a characteristic appearance with many branches spreading in all directions and a specic fractal dimension. The aggregates resemble many created by processes in nature such as crystallization, 　uid 　ow and growth of bacteria colonies. In this thesis the DLA model and a few variations of it are investigated to illuminate its 　exibility. The variations investigated are a noise-reduced model, introducing surface tension and increasing the 　ux of particles. The fractal dimension is calculated in each case and compared to the results of similar experiments, both simulated and real.