Abstract
In this paper, large eddy simulation (LES) coupled with two uncertainty quantification (UQ) methods, namely latin-hypercube sampling (LHS) and polynomial chaos expansion (PCE), have been used to quantify the effects of model parameters and spray boundary conditions on diesel and gasoline spray simulations. Evaporating, non-reacting spray data was used to compare penetration, mixture fraction and spray probability contour. Two different sets of four uncertain variables were used for diesel and gasoline sprays, respectively. UQ results showed good agreement between experiments and predictions. UQ statistics indicated that discharge coefficient has stronger impact on gasoline than diesel sprays, and spray cone angle is important for vapor penetration of both types of sprays. Additionally, examination of the gasoline spray characteristics showed that plume-to-plume interaction and nozzle dribble are important phenomena that need to be considered in high-fidelity gasoline spray simulations.
Original language | English (US) |
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Title of host publication | SAE Technical Paper Series |
Publisher | SAE International |
DOIs | |
State | Published - Mar 28 2017 |
Externally published | Yes |
Bibliographical note
KAUST Repository Item: Exported on 2022-06-28Acknowledgements: Support for this research was provided by China Scholarship Council, Wisconsin Engine Research Consultants and King Abdullah University of Science & Technology.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
ASJC Scopus subject areas
- Safety, Risk, Reliability and Quality
- Pollution
- Automotive Engineering
- Industrial and Manufacturing Engineering