GDI Swirl Injector Spray Simulation:A Combined Phenomenological-CFD Approach Politecnico di Torino, Italy

Format:

Conference/Event

Author/Creator:

Badami, M., author.

Conference Name:

2004 Powertrain & Fluid Systems Conference & Exhibition (2004-10-25 : Tampa, Florida, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2004

Summary:

In this work the formation and the evolution of the fuel spray emerging from a hollow-cone swirl injector were investigated. The first aim of the work was to set up a tool for fuel spray simulation in a CFD analysis that can offer a reasonable accuracy with no significant increment in the computational time.The analysis started from a theoretical formulation of the fuel flow inside the injector, based on the potential theory, obtaining an injector model which allows the calculation of the main spray characteristics usually required by the CFD analysis (id est droplet velocity, fuel film thickness, droplet size distribution).These parameters can be obtained only from spray cone angle and mass flow rate, which are the data commonly provided by injector manufacturers.Furthermore, a phenomenological approach was also presented, in order to properly simulate in CFD analysis the spray tip penetration in the dense spray zone, without requiring an increase of the spatial grid resolution.Encouraging results were obtained that are in good agreement with the experimental data

Notes:

Vendor supplied data

Publisher Number:

2004-01-3005

Access Restriction:

Restricted for use by site license