Evaluation of splash models with high-pressure Diesel spray

Spray impingement on walls is an important physical process in modern DI Diesel engines as it greatly influences mixture formation, combustion process and exhaust emissions. The main features of each model are discussed and compared to highlight differences, peculiarities and simplifications. The splash criterion, the ratio of the splashed mass to the incident mass and the splashed droplet size are investigated. The experimental spray-wall interaction for a spray injected by a CR injection apparatus in a constant volume vessel is shown for two different injection pressures, 800 and 1200 bar. The numerical results are compared to the experimental data in terms of splashed cloud shape.