This volume contains seven keynote lectures of the TI 2006 conference that was held in Porquerolles, May 29-June 2, 2006. These lectures address the latest developments in direct numerical simulations, large eddy simulations, compressible turbulence, coherent structures, bubbly channel flows, combustion. The keynote lectures are extended manuscripts that were not published in the special issues of the journals "Computers and Fluids" and "Flow, Turbulence and Combustion". The present monograph is a snapshot of the state-of-the-art in the field of turbulence with a view on theory, experiments and numerical simulations.

Zusammenfassung
The Turbulence and Interactions 2006 (TI2006) conference was held on the island of Porquerolles, France, May 29-June 2, 2006. The scientific sponsors of the conference were Association Française de Mécanique, CD-adapco, DGA Ecole Polytechnique Fédérale de Lausanne (EPFL), ERCOFTAC : European Research Community on Flow, Turbulence and Combustion, FLUENT, The French Ministery of Foreign Affairs, Laboratoire de Modélisation en Mécanique, Paris 6, ONERA. The conference was a unique event. Never before have so many organisations concerned with turbulence works come together in one conference. As the title Turbulence and Interactions anticipated, the workshop was not run with parallel sessions but instead of one united gathering where people had strong interactions and discussions. Many of the 85 or so attendants were veterans of previous ERCOFTAC conferences. Some young researchers attended their very first int- national meeting. The organisers were fortunate in obtaining the presence of the following - vited speakers: N. Adams (TUM, Germany), C. Cambon (ECL, France), J.-P. Dussauge (Polytech Marseille, France), D.A. Gosman (Imperial College, UK), Y. Kaneda (Nagoya University, Japan), O. Simonin (IMFT, France), G. Tryggvason (WPI, USA), D. Veynante (ECP, France), F. Waleffe (University of Wisconsin, USA), Y.K. Zhou (University of California, USA). The topics covered by the 59 papers ranged from experimental results through theory to computations. The papers of the conference went through the usual - viewing process for two special issues of international journals : Computers and Fluids, and Flow, Turbulence and Combustion.

Inhalt
Strongly Anisotropic Turbulence, Statistical Theory and DNS.- Compressible Turbulence in Interactions of Supersonic Flows.- Universality in Statistics at Small Scales of Turbulence: A Study by High Resolution DNS.- Supersonic and Hypersonic Boundary-Layer Flows.- Studies of Bubbly Channel Flows by Direct Numerical Simulations.- Large Eddy Simulations of Turbulent Combustion.- Exact Coherent Structures in Turbulent Shear Flows.