ABSTRACT
To further develop the DISC engines computational fluid dynamics (CFD) plays a central role . Simulations with sprays impinging on surfaces often fail to provide sufficient accuracy. The main reasons for this are both the lack of models describing the phenomena and the lack of experimentally validated data. To make CFD simulations more accurate there is a need of increased knowledge of the physics of the film build up. This in tum requires a method that measures wall film thickness, which is able to operate under realistic engine conditions, to be developed. It is also important that both the temporal and spatial resolution is high. The accuracy of the method has to be in the order of a few micrometers .
