Modelling of Transport Phenomena in Diesel Sprays at Late-Cycle Post-Injection Conditions

The development of diesel sprays at late-cycle post-injection conditions is numerically investigated using a dense-particle Eulerian-Lagrangian stochastic methodology. Model validation takes place against experimental data available for injection into an optically accessible constant volume chamber using a single-hole injector nozzle. A parametric analysis on the effect of ambient temperature and density, injection duration and multiple injection strategy is performed to enlighten the development of the injected sprays for various post-injection strategies, with densities in the range of 1.2 - 3 kg/m₃ and temperature in the range of 800 - 1400 K.