Third Symposium on
Hybrid RANS - LES Methods

10 - 12 June 2009, Gdansk, Poland

Participants photo

Hybrid modelling methods of turbulent flows, combin-ing RANS and LES techniques, have received increasing attention over the past decade to fill up the gap between (U)RANS and LES computations in aerodynamic appli-cations at industrially relevant Reynolds numbers.

The present Symposium addresses the most recent and new development on advanced URANS, DES and other hybrid RANS-LES techniques, which covers both the fundamentals of modelling approaches and their appli-cations to industrial flow problems.

As with the First Symposium (Stockholm, 2005) and the Second (Corfu, 2007), the aim of the Third Symposium is to continue with the provision of a forum for research-ers and industrial engineers to exchange knowledge and expertise, to discuss and to present recent achievements in the development and applications of hybrid RANS-LES methods - including physical models and related numerical issues. Hence, this 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.

Main Topics

  • Advanced URANS modelling
  • Improved DES modelling
  • Hybrid URANS-LES methods
  • DES versus Unsteady RANS and/or LES
  • Modelling-related numerical issues
  • Industrial applications
  • Mini-workshop on a specified test case
  • Commercial CFD software exhibition

The Symposium on Hybrid RANS-LES Methods has been an important exploitation mean of the European DESider project (2004-2007), on which information is still available at the project Web site:

The Symposium has its focus on flow physics model-ling and related aerodynamic applications, particu-larly, in terms of advanced URANS, improved DES and hybrid RANS-LES approaches in general.

The Symposium is open to academic researchers, graduate students, industrial engineers, industrial R&D managers and consultants with an active in-terest in the fields of turbulent-flow modelling, simu-lations and measurements and multidisciplinary CFD applications, such as flow control, aero-acoustics, aerodynamic optimization and aero-elasticity.

Besides different sessions, the symposium includes also Test Case (TC) Sessions (mini-workshop) dedicated to a specific test case stemmed from the European UFAST project. We encourage interested par-ticipants to present their results in the workshop. For further information, please refer to the official Sym-posium Web site: