Naslov
Numerical Modelling of Diesel Spray Using the Eulerian Multiphase Approach

Autori
Vujanović, Milan ; Petranović, Zvonimir ; Edelbauer, Wilfried ; Baleta, Jakov ; Duić, Neven

Izvornik
Energy conversion and management (0196-8904) 104 (2015); 160-169

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Diesel engine; Spray process; Eulerian framework; Numerical modelling

Sažetak
This research investigates high pressure diesel fuel injection into the combustion chamber by performing computational simulations using the Euler-Eulerian multiphase approach. Six diesel- like conditions were simulated for which the liquid fuel jet was injected into a pressurised inert environment (100% N2) through a 205 µm nozzle hole. The analysis was focused on the liquid jet and vapour penetration, describing spatial and temporal spray evolution. For this purpose, an Eulerian multiphase model was implemented, variations of the sub-model coefficients were performed, and their impact on the spray formation was investigated. The final set of sub-model coefficients was applied to all operating points. Several simulations of high pressure diesel injections (50, 80, and 120 MPa) combined with different chamber pressures (5.4 and 7.2 MPa) were carried out and results were compared to the experimental data. The predicted results share a similar spray cloud shape for all conditions with the different vapour and liquid penetration length. The liquid penetration is shortened with the increase in chamber pressure, whilst the vapour penetration is more pronounced by elevating the injection pressure. Finally, the results showed good agreement when compared to the measured data, and yielded the correct trends for both the liquid and vapour penetrations under different operating conditions.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

Napomena
S.I. on Sustainable development of energy, water and environment systems.

POVEZANOST RADA