Hybrid simulation methods, combining RANS and LES
techniques, have received increasing attention over the past
few years from the turbulence-research community, CFD code
developers and industrial CFD engineers. In particular, the
Detached Eddy Simulation (DES) method, first introduced in
1997, has acquired a predominant profile and has been the
subject of much interest and study. 

The fundamentals of DES and other RANS-LES combinations,
like hybrid RANS-LES coupling, or the more recent
Scale-Adaptive Simulation (SAS) model, together with their
applications to industrial flow problems, constitute the
main focus of the EU project DESider. The present Symposium,
which is closely associated with the DESider project, thus
addresses the general objective of the project, i.e. to
improve CFD-aided design procedures, flow control and
analysis of turbulent unsteady aerodynamic flows by making
DES and hybrid RANS-LES techniques available to the European
Aeronautic community. 

As with the First Symposium held in Stockholm, 14/15 July
2005, the aim of the Second Symposium is to provide a forum
for researchers and industrial engineers to exchange their
knowledge and experience, to discuss current problems and
results and to present recent achievements in the
development and applications of hybrid RANS-LES methods -
including physical models and related numerical issues. It
is expected that the Symposium will encourage an emergence
of new ideas and inspire participants to pursue and
intensify efforts towards future developments and
applications of hybrid RANS-LES methods. 

During the symposium, an Exhibition of Commercial CFD
Software will be held. Thus, commercial software vendors are
invited to participate. For further details, please contact
the Symposium organisers.