Turbulence and Interactions : Proceedings of the TI 2012 conference The book presents a snapshot of the state of art in the field of turbulence modeling and covers the latest developments concerning direct numerical simulations large eddy simulations compressible turbulence coherent structures two phase flow simulation and other related topics. It provides readers with a comprehensive review of both theory and applications describing in detail the authors’ own experimental results. The book is based on the proceedings of the third Turbulence and Interactions Conference (TI 2012) which was held on June 11 14 in La Saline les Bains La Réunion France and includes both keynote lectures and outstanding contributed papers presented at the conference. This multifaceted collection which reflects the conference´s emphasis on the interplay of theory experiments and computing in the process of understanding and predicting the physics of complex flows and solving related engineering problems offers a practice oriented guide for students researchers and professionals in the field of computational fluid dynamics turbulence modeling and related areas.