Abstract
The paper describes a 3-D - soot modelling on a platform of a 3-D code for engine thermodynamic simulation KIVA 3. Hiroyasu model was used originally in combination with Reitz CTCM (Characteristic Time Combustion Model). This combination proved to be rather inadequate for the case of a truck engine comparing the predictions to experiments. High sensitivity to the prediction of residual unburned fuel was found. No reasonably realistic change of model parameters was able to correct these results. Therefore, a new model concerning the rate of soot formation and oxidation has been developed and CTCM has been slightly adapted by correction of turbulent mixing time. The proposed model has been preliminary tested at 0-D case. It has been implemented to KIVA 3 and compared with Hiroyasu soot model and with experimental results. The 3-D form is supplemented by animations of combustion process, mass fraction of oxygen, fuel and soot. At this level of development, new model has proven to be prospective for predictions of soot formation.
Nevertheless, it should be tested for more cases of diesel engines in the future.