Speaker: Sergio Chibbaroh Laboratoire National d'Hydraulique (Chatou, FRANCE) "Introduction to the PDF approach to turbulent two-phase flows: basic theory and numerics with applications" I will describe the main ideas and motivations behind the stochastic modelling (PDF) of complex phenomena in physics. The essential mathematical framework will be given and briefly explained. The particular case of turbulent two-phase flows will be presented as a typical example where such techniques present major advantages. Finally, some numerical results obtained in a engineering configuration are shown.