Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi !

CFD modelling of spray and combustion process using avl FIRE (CROSBI ID 638396)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Petranović, Zvonimir ; Edelbauer, Wilfried ; Vujanović, Milan ; Duić, Neven ; Priesching, Peter ; Tatschl, Reinhard CFD modelling of spray and combustion process using avl FIRE // Digital Proceedings of The 36th International Symposium on Combustion. 2016

Podaci o odgovornosti

Petranović, Zvonimir ; Edelbauer, Wilfried ; Vujanović, Milan ; Duić, Neven ; Priesching, Peter ; Tatschl, Reinhard

engleski

CFD modelling of spray and combustion process using avl FIRE

The common and widely used method for spray calculation is the Lagrangian DDM approach. In this model the gaseous phase is considered as continuum whilst the liquid phase is represented by group of droplets called parcels. The DDM model is numerically efficient but has several disadvantages for solving the dense spray region. To overcome disadvantages, an Eulerian droplet size class (DSC) method is developed. Within this model, both the liquid and the gaseous phases, are considered as continuum. The Eulerian DSC method is computationally more expensive but gives a good representation of the dense, near nozzle, region. To take advantage of both, the Eulerian DSC and Lagrangian DDM method, they can be combined through the AVL Code Coupling Interface (ACCI). The advantage of such approach is retaining a high CPU efficiency, characteristic for the DDM method, with an increased solution accuracy in the near-nozzle region characteristic for the DSC method. The alternative to the ACCI approach would be the Eulerian-Lagrangian spray atomization (ELSA) model which has been under constant development. The main difference between the ELSA spray model and the ACCI approach is that in the ELSA model, in the vicinity of the nozzle, the gas and the liquid phase are considered as one mixture phase. The DDM method and the ACCI approach were used for simulations of real engine configurations. Seven cases representing seven engine operation points were simulated, and the influence of swirl intensity, injection timing, EGR composition, etc. on the pollutant emissions was researched. The DSC method was used for investigation of high pressure liquid fuel injection into a constant volume chamber. In this approach the combustion process is described by solving general gas phase reactions. The simulation results of liquid and vapor fuel axial/radial penetration, lift-off length and ignition delay, mixture and temperature field were compared to the available experimental data. The ELSA spray model was used together with a real representation of the inflow boundary condition. The influence of the non-symmetrical flow developed within the nozzle hole channel on the spray shape was successfully captured.

CFD modelling; Eulerian; Lagrangian; coupling; ELSA; combustion; Nozzle flow

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o prilogu

2016.

objavljeno

Podaci o matičnoj publikaciji

Digital Proceedings of The 36th International Symposium on Combustion

Podaci o skupu

36th International Symposium on Combustion

poster

31.07.2016-05.08.2016

COEX, Seoul, Korea

Povezanost rada

Strojarstvo