HardBrown

Simulation of Hard Brownian and Granular Particles Related papers: Event Driven Langevin simulations of Hard Spheres http://arxiv.org/abs/1111.6197 The simulation of hard particles has been longly regarded as a tool for checking idealized theories. Nowadays, Colloidal Science, Granular Matter and Nano Fluidics deal with objects that can be described as hard particles subject to Brownian motion. While there is a vast choice of simulation tools and libraries for atoms, molecules and in general "soft" particles, this is not the case for "hard" particles. In particular, the standard integration methods for Newtonian and Brownian dynamics are based on the continuity of the inter-particle potential and fail for the steep interactions among hard particles. Therefore, while simulation methods for systems of many particle have begone a standard in the curriculum of numerical scientists, it is still difficult for them to get an "hand-on" knowledge of hard particles simulations. HardBrown aims to fill such gaps. For hard particles, it is necessary to resort on Event-Driven simulation methods where the possible collisions among the particles are predicted and then processed through the use of a time-ordered Priority Queue. HardBrown contains programs that can be used as templates for: * Event Driven Newtonian Dynamics * Event Driven Granular Dynamics * Event Driven Brownian Dynamics Both for educational and debugging purposes, it is important to access visually to the ongoing simulation. HardBrown has interfaces and template programs for 2d and 3d real-time animated simulations via PlPlot and Inventor libraries. HardBrown has been developed on an Ubuntu system, and should therefore be easy to install on Ubuntu and Debian based architecture. The language chosen is C++. Data Registrazione: lun 17 nov 2008 11:05:34 UTC Licenza: GNU General Public License V3 or later