"Advances in Turbulence XI" is a scholarly book that summarizes the contributions from the EUROMECH European Turbulence Conference (ETC 11), which took place in 2007 in Porto. This work provides a comprehensive overview of current research findings and developments in the field of turbulence. The selected contributions cover a wide range of topics that are of interest to scientists and engineers dealing with the complex phenomena of turbulence in various applications. The topics addressed range from acoustic aspects of turbulent flows to geophysical and astrophysical turbulence, highlighting the versatility and relevance of research in this area. The editors, J. M. L. M. Palma and A. Silva Lopes, have carefully selected the works to offer readers valuable insights into the latest advances and techniques in turbulence research.