Professor Szmelter’s lecture will review aspects of handling these complex geometries by means of different mesh generation approaches and discretisation techniques – such as finite volume, elements and differences – supplemented by mesh adaption. A brief review of aspects of mesh adaption, related to error indicators and mesh manipulation techniques, will be provided and illustrated with numerical examples.

Accurate simulation of turbulent flows still poses challenges especially for complex flows. Techniques taking turbulence modelling can vary from the efficient sei-empirical methods such as boundary layer viscous-inviscid interactions, via the Raynolds Average Navier Stokes turbulence modelling, to more advanced approaches like Large Eddy Simulations and novel turbulence treatment, using the Implicit Large Eddy Simulations.

The efficacy of such simulations will be illustrated in the context of advanced simulations of atmospheric and engineering applications for large problems for which the use of supercomputers is essential.