During the third week of July CIMNE (International Center for Numerical Methods in Engineeringwww.cimne.com) and SEMNI (Spanish Association of Numerical Methods in Engineering) organised at the Palau de Congressos de Catalunya (Barcelona, Spain) the 11th World Congress on Computational Mechanics (WCCM XI), the 5th. European Conference on Computational Mechanics (ECCM V) and the 6th. European Conference on Computational Fluid Dynamics (ECFD VI) gathering four thousand attendees from 52 countries.