The goal of my project is to develop software that allows the simulation of many-body systems. Numerical modelling can save a lot of time and money both in basic and applied research. I decided to exploit the parallel computing capabilities of the graphics adapter in order to be able to model many-body systems at low cost and I used the programming language C++. My first goal was to model collisions of galaxies and eventually I was able to simulate such collisions in two and three dimensional space. My results are consistent with astrophysical observations. Furthermore, I modelled solids, liquids and gases using the Lennard-Jones potential. I optimized these and my astrophysical simulations throughout my project. My simulations based on the Lennard-Jones potential reached their limit when I tried to model water molecules as I did not include quantum mechanical effects. However, I obtained interesting results in the area of nanofluidics, which clearly demonstrated differences between our macroscopic world and the nanoscale. Finally, I developed components for controlling liquids on the nanoscale, which could be used for the realization of novel devices.
