The bi-annual Workshop series on Direct and Large Eddy Simulation (DLES) which started in 1994 focuses on modern techniques to simulate turbulent flows based on the partial or full resolution of the instantaneous turbulent flow structure. With the growing capacities of modern computers, this approach has been gaining more and more interest over the years and will undoubtedly be further enhanced and applied. Techniques of hybrid modelling based on a combination of LES and RANS approaches also fall into this category and are covered as well.

The goal of the workshop is to establish a state-of-the-art of DNS, LES and related techniques for the computation and modelling of turbulent and transitional flows. The broad range of featured topics for the 13th edition of DLES in Udine will be:

• LES fundamentals and modeling
• Uncertainty quantification and data assimilation
• Numerical techniques
• Heat and mass transfer
• MHD
• Biological flows
• Multiphase flows
• Environmental and geophysical flows
• Reacting flows and combustion
• Industrial and environmental applications