This course will address the analysis of modern approaches to turbulence modelling, different models and their applications to the solution of industrial problems including external and internal aerodynamics, heat transfer, combustion and aero-acoustics.
Computational Fluid Dynamics (CFD) is required in many industrial applications including external and internal aerodynamics, heat transfer, combustion, aeroacoustics, etc. It is “therefore”, if not more, at least equally important as experimental Fluid Dynamics. Direct Numerical Simulation (DNS) for high Reynolds number flows is highly time consuming and only possible for relatively simple geometries. There are many existing turbulence modelling techniques which allow a significant reduction in this computational cost. However, different models can provide very different results for the same problem. The appropriate choice of a turbulence model, thus requires a deep enough understanding, significant experience and computational skills in the field of turbulence modelling. The course will address the analysis of modern approaches to turbulence modelling and their applications to the solution of industrial problems.
The course consists of two parts: theoretical course on advanced CFD approaches and tutorials with open-source “Code_Saturne” for solving the Navier-Stokes equations. The main focus of the first part will be on RANS (Reynolds Averaged Navier-Stokes) models, LES (Large Eddy Simulation) and DNS for turbulent flows, fluid-structure interaction methods, artificial boundary conditions for compressible flows and aeroacoustics.
The second (practical) part of the course will be held at the Hartree Centre, on the campus of the Science & Technology Facilities Council (STFC) Daresbury Laboratory. This part is devoted to learning how to use the open-source CFD solver Code_Saturne, which is developed by EDF R&D for solving the Navier-Stokes equations. Code_Saturne is a co-located finite volume solver handling any type of mesh, structured or unstructured. It includes a large range of RANS/LES models with additional modules for compressible flows, combustion, radiative heat transfer, magneto-hydrodynamics, two-phase flows, atmospheric flows. Through various projects, STFC Daresbury Laboratory have tested Code_Saturne's High Performance Computing (HPC) capabilities. They also have excellent training and HPC facilities; the Hartree Centre currently hosts 25th and 30th fastest supercomputers in the world (Top500 supercomputers, Nov 2014).