Wall Film Dynamics Modeling for Impinging Sprays in Engines Ford Motor Company

Format:

Conference/Event

Author/Creator:

Han, Zhiyu, author.

Conference Name:

SAE 2004 World Congress & Exhibition (2004-03-08 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2004

Summary:

This paper proposes a film dynamics model for liquid film resulting from fuel spray impinging on a wall surface. It is based on a thin film assumption and uses numerical particles to represent the film to be compatible with the particle spray models developed previously. The Lagrangian method is adopted to govern the transport of the film particles. A new, statistical treatment was introduced of the momentum exchange between the impinging spray and the wall film to account for the directional distribution of the impinging momentum. This model together with the previously published models for outgoing droplets constitutes a complete description of the spray wall impingement dynamics. For model validation, films resulting from impinging sprays on a flat surface with different impingement angles were calculated and the results were compared with the corresponding experimental measurements. Detailed comparison of film shape evolution and film thickness was made and good agreement was obtained. The models were then applied to engine simulations to demonstrate their capability in predicting the spray wall interaction in a port fuel injection engine

Notes:

Vendor supplied data

Publisher Number:

2004-01-0099

Access Restriction:

Restricted for use by site license