I have completed a PhD thesis on two-phase flows entitled "Physical modelling of interactions between interfaces and turbulence". at CEA-Grenoble and IMF-Toulouse. This thesis deals with the study of interactions between coherent strutures like vortex and fully deformable bubbles. These interactions strongly impact the flow properties. Unfortunately, Direct Numerical Simulations (DNS) have to entail a number of degrees of freedom proportional to the third power of the Reynolds number to correctly describe the flow behaviour. This extremely hard constraint makes it impossible to use DNS for industrial applications. Our strategy consists in using and improving DNS method in order to develop the Interfaces and Subgrid Scales concept. ISS is a two-phase equivalent to the single-phase Large Eddy Simulation (LES) concept. The challenge of ISS is to integrate the two-way coupling phenomenon into subgrid models.
For more details, you can download the whole thesis only "en français" and the slideshow of the defense.Last Modified: August, 2009
