Context and objectives
In order to improve the efficiency of their turbine, the Safran group develop their own fuel injector dedicated to their combustion chamber. This allows a decrease of fuel consumption during all the operative range, and also respect the norms which are more and more restrictive. The complexity of this kind of injection system and the physical mechanism involved (film instability, atomization …) require depth studies on the injector. Experiment studies permit to establish empirical correlation between the injector used and provide, for example, the probability density function of the number of droplets obtained. However, this kind of experiment cannot cover all the operative range of the injector.
This thesis has for main objective the improvement of the design of the injector and in the end, to improve the injection system. For this purpose, different numerical approaches will be developed and compared with experimental results.
In order to perform this study, a collaboration between the CORIA laboratory (Rouen), the CMAP of the Ecole Polytechnique (Paris) and the SAFRAN group have emerged.