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Visualisation of 2D and 3D Discrete Element Models using OpenGL

In many projects involving Discrete Element Models (DEM’s), visualisation is very important, not least because animations of DEM’s can be extremely visually attractive as well as scientifically informative. In this report, we introduce a simple OpenGL visualiser for DEM’s that reads a file containing the particle positions as a function of time and animates them. Moreover we will show how we can add interesting functionality such as colour, lighting, motion etc. We show visualisations of data sets produced by a third-party DEM code that simulates the formation of sand piles. We also present a parallelisation of the serial code using MPI.