Experimental and Numerical Investigation of High-Pressure Diesel Sprays with Multiple Injections at Engine Conditions

2010-01-0179

04/12/2010

Event
SAE 2010 World Congress & Exhibition
Authors Abstract
Content
A numerical methodology to simulate the high pressure spray evolution and the fuel-air mixing in diesel engines is presented. Attention is focused on the employed atomization model, a modified version of the Huh and Gosman, on the definition of a turbulence length scale limiter and of an adaptive local mesh refinement technique to minimize the result grid dependency. All the discussed models were implemented into Lib-ICE, which is a set of libraries and solvers, specifically tailored for engine simulations, which runs under the open-source CFD technology OpenFOAMĀ®.
To provide a comprehensive assessment of the proposed methodology, the validation procedure consisted into simulating, with a unique and coherent setup of all models, two different sets of experiments: a non-evaporating diesel fuel spray in a constant-volume vessel with optical access and an evaporating non-reacting diesel fuel spray in an optical engine. The first of these experiments were carried out by the authors by analyzing optical pictures of the jets taken at different instants by imaging technique. A Common-Rail-based injection apparatus was used for injecting commercial diesel fuel at pressures ranging from 50 to 123 MPa inside a constant volume vessel at engine-like density conditions and operating in single shot mode. Literature data were then used to validate the vapor fuel-air mixing at engine conditions.
Meta TagsDetails
DOI
https://doi.org/10.4271/2010-01-0179
Pages
14
Citation
Lucchini, T., D'Errico, G., Ettorre, D., Brusiani, F. et al., "Experimental and Numerical Investigation of High-Pressure Diesel Sprays with Multiple Injections at Engine Conditions," SAE Technical Paper 2010-01-0179, 2010, https://doi.org/10.4271/2010-01-0179.
Additional Details
Publisher
Published
Apr 12, 2010
Product Code
2010-01-0179
Content Type
Technical Paper
Language
English