The context of integrated numerical simulations of gas turbine engines by use of high-fidelity CFD tools 
recently emerged as a promising path to improve engines design and understanding. Relying on 
massively parallel super-computing such propositions still have to prove feasibility to efficiently take 
advantage of the ever increasing computing power made available worldwide. Although Large Eddy 
Simulations (LES) have recently proven its superiority in the context of the combustion chamber of gas 
turbine, such methodologies need to be developed and start addressing the problem of the 
turbomachinery stages if integrated simulations based on LES are to be foreseen. 

CERFACS has recently developed an in-house code and strategy, called TurboAVBP,  for turbomachinery 
LES thanks to the coupling of multi-copies of the unstructured compressible reacting LES solver AVBP, 
designed to run efficiently on high performance massively parallel architectures. Aside from the 
specificity of such wall bounded flows, rotor/stator LES type simulations require specific attention and 
the interface should not interfere with the numeric scheme to preserve proper representation of the 
unsteady physics crossing this interface. A tentative LES compliant solution based on moving overset 
grids method has been proposed and evaluated for high-fidelity simulation of the rotor/stator 
interactions. Simple test cases of increasing difficulty with reference numerical  prove the solution to 
handle acoustics, vortices and turbulence. The approach has also successfully been applied to 
compressor and turbine stages, providing correct mean values and promising paths for unsteady 
analysis of the flow field.
http://www.cerfacs.fr/~cfdbib/repository/TR_CFD_13_2.pdf

http://www.usinenouvelle.com/article/le-cerfacs-met-l-evolution-temporelle-de-la-vorticite-en-
images.N194519

The aim of this post-doc is to continue to validate the methodology as well as to enhance it. The final 
application will be a simulation of the combustor / turbine stage interaction with many flow 
characteristics to investigate.

A Phd degree in computational fluid dynamics is mandatory with a very strong background in 
turbomachinery flows. Experience in unsteady flow simulation (LES, DES, DNS ...) and analysis is also 
required.