  In this paper we present a new technique for efficiently implementing Large
Eddy Simulation with the Discontin- uous Galerkin method on unstructured
meshes. In particular, we will focus upon the approach to overcome the
computational complexity that the additional degrees of freedom in
Discontinuous Galerkin methods entail. The turbulence algorithms have been
implemented within Fluidity, an open-source computational fluid dynamics
solver. The model is tested with the well known backward-facing step problem,
and is shown to concur with published results.
