Multidimensional Modelling of Spray Impingement in Modern Diesel Engines University of Rome "Tor Vergata"

Format:

Conference/Event

Author/Creator:

Andreassi, Andreassi, author.

Contributor:

Ubertini, S.

Conference Name:

7th International Conference on Engines for Automobile (2005-09-11 : Naples, Italy)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Naples, ITALY Consiglio Nazionale delle Ricerche 2005

Summary:

In modern DI diesel engines with high pressure injectionsystems, the impingement of the spray on the piston head frequentlyoccurs. Being the mixture preparation a crucial aspect for thecorrect operation of the engine, as it greatly influences andalters the combustion process, numerical modelling of thespray-wall interaction becomes essential.Three different spray-wall interaction models have been testedand integrated into a modified version of the KIVA-3V. All themodels conserve mass, momentum and energy of the impinging dropletand have a different behavior if the surface is wet or dry. Thepaper focuses on the main features of the single models,investigating the different criteria used to define the splashoccurrence, the ratio of the splashed mass to the incident mass andthe splashed droplet size.Comparisons with experimental data are presented. The effects ofthe initial injection velocity and the spray cone angle are alsoinvestigated

Notes:

Vendor supplied data

Publisher Number:

2005-24-092

Access Restriction:

Restricted for use by site license