NICCOLINI MARMONT DU HAUT CHAMP C. A.

The closing sound of a car door is objectively not related to the intrinsic quality of the vehicle but it is an important subjective parameter for vehicle evaluation. For automotive developers, it is very interesting to deepen this phenomenon and to define a methodology to understand the influence of several parameters on door-closing sound...

The aim of the present work is to design a test rig suited to investigate the dynamic interaction between rotor and hydrodynamic journal bearings in micro gas turbines (microGT), i.e. with reference to small bearings (diameter in the order of ten millimeters). Particularly, the device is capable of measuring the journal location. Therefore, the...

The aim of the present work is to retrace experimental, analytical and numerical analyses which deal with compressor instability phenomena, such as rotating stall and surge. While the first affects only the machine itself, the second involves the whole energy system. Surge onset is characterized by strong pressure and mass flow rate...