Naslov
Numerical simulations of primary breakup process by using the Euler Eulerian multi-fluid approach

Autori
Petranović, Zvonimir ; Gadžić, Andrea ; Vujanović, Milan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Digital Proceedings of 2nd South East European Conference on Sustainable Development of Energy, Water and Environment Systems - SEE SDEWES Piran 2016 / Ban, Marko [et al.] - Zagreb : Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, 2016

Skup
2nd South East European Conference on Sustainable Development of Energy, Water and Environment Systems

Mjesto i datum
Piran, Slovenija, 15.06.2016. - 18.06.2016

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
CFD; Modelling; Spray; Primary atomization

Sažetak
This work deals with numerical simulations of liquid fuel atomization focusing on the processes in the near nozzle region. In internal combustion diesel engines the liquid fuel is injected into the combustion chamber with high velocities through as mall diameter nozzle. Accordingly, the turbulent and aerodynamic forces impact the fuel jet surface which results in the jet atomization. The atomization process is modelled by employing the Euler Eulerian multi-fluid approach where both, the liquid and the gaseous phases are considered as continuum. Furthermore, the liquid phase is divided into a finite number of drop classes characterized with the drop diameter. Considering the fact that the experimental investigation of the optically dense spray region (in the vicinity of the nozzle) is highly complex, the simulation results were compared to the available Direct Numerical Simulations (DNS) results of fuel jet primary breakup process. The axial and radial mixture volume fraction were compared to the DNS studies and the model coefficients have been appropriately chosen. The results of the study show a promising results where the used model successfully captured the fuel jet disintegration process.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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