The second Workshop on "Quality and Reliability of Large-Eddy Simulations",

QLES2009, was held at the University of Pisa from September 9 to September 11,

2009. Its predecessor, QLES2007, was organized in 2007 in Leuven (Belgium). The

focus of QLES2009 was on issues related to predicting, assessing and assuring the

quality of LES.



The main goal of QLES2009 was to enhance the knowledge on error sources and

on their interaction in LES and to devise criteria for the prediction and optimization

of simulation quality, by bringing together mathematicians, physicists and engineers

and providing a platform specifically addressing these aspects for LES. Contributions were made by leading experts in the field.



The present book contains the written contributions to QLES2009 and is divided

into three parts, which reflect the main topics addressed at the workshop: (i) SGS

modeling and discretization errors; (ii) Assessment and reduction of computational

errors; (iii) Mathematical analysis and foundation for SGS modeling.