Thanks to the increase in computing power, computational fluid 
dynamics (CFD) plays a central and growing role in the engineering 
design process for a wide range of applications. When the flow is 
turbulent however, a spectrum of approaches are available, ranging 
from direct numerical simulation (DNS) to Reynolds-averaged 
Navier-Stokes (RANS) approaches. These each have their particular 
ranking in terms of computational cost and predictive fidelity.


A relatively new family of approaches has emerged, which targets 
computational capacities expected to become routinely available in the 
near future. These blend RANS and large-eddy simulation (LES) methods 
such that their respective advantages are complemented. One of the 
most popular such approaches is detached-eddy simulation (DES), which 
forms the object of this study.


Within the EU project ATAAC (Advanced Turbulence simulation for 
Aerodynamic Application Challenges), the further development of the 
DES method is to be pursued. To this end, a wide range of test cases 
are to be computed, ranging from simple canonical flows through to 
complex, industrially-relevant configurations. Particular focus will 
be placed on the development of methods to reduce the computational 
cost and on the extraction of clear best practice guidance for 
industrial users.