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Experimental and Numerical Investigation of High-Pressure Diesel Sprays with Multiple Injections at Engine Conditions
Technical Paper
2010-01-0179
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
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 OpenFOAM®.
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.
Recommended Content
Authors
- Tommaso Lucchini - Department of Energy - Politecnico di Milano
- Gianluca D'Errico - Department of Energy - Politecnico di Milano
- Daniele Ettorre - Department of Energy - Politecnico di Milano
- Federico Brusiani - Univ. degli Studi di Bologna
- Gian Marco Bianchi - Univ. degli Studi di Bologna
- Alessandro Montanaro - Istituto Motori CNR
- Luigi Allocca - Istituto Motori CNR
Topic
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.Also In
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