Preface In aircraft design, efficiency is determined by the ability to accurately and rel- bly predict the occurrence of, and to model the development of, turbulent flows. Hence, the main objective in industrial computational fluid dynamics (CFD) is to increase the capabilities for an improved predictive accuracy for both complex flows and complex geometries . This text part taken from Haase et al (2006), - scribing the results of the DESider predecessor project FLOMANIA is still - and will be in future valid. With an ever-increasing demand for faster, more reliable and cleaner aircraft,...