Advanced search
1 file | 2.41 MB

A quasi-dimensional combustion model for spark ignition engines fueled with gasoline–methanol blends

Duc-Khanh Nguyen (UGent) , Louis Sileghem (UGent) and Sebastian Verhelst (UGent)
Author
Organization
Abstract
The current work provides a quasi-dimensional model for the combustion of methanol–gasoline blends. New correlations for the laminar burning velocity of gasoline and methanol are developed and used together with a mixing rule to calculate the laminar burning velocity of the blends. Several factors (such as the laminar burning velocity, initial flame kernel, residual gas fraction, turbulence, etc.) have been investigated and the sensitivity of these factors and the used sub-models on the predictive performance was assessed. The simulation results were compared with measurement data from two engines on different gasoline–methanol blends. The results show the importance of the laminar burning velocity correlation, the method of initializing combustion and the turbulent burning velocity model. The newly developed laminar burning velocity correlation of gasoline performed equally or better than the existing correlations and the newly developed correlation of methanol outperformed the other correlations. The initial flame kernel size had a strong influence on the ignition delay. Changing the initial flame kernel to reproduce the same ignition delay was very effective to improve the simulations. Several turbulent combustion models were tested with the newly developed laminar burning velocity correlations and optimized ignition delay. In conclusion, the model of Bradley reproduced the trend going from gasoline to methanol much better than others due to the inclusion of the Lewis number.
Keywords
Methanol–gasoline blends, alcohol, laminar burning velocity correlation, quasi-dimensional model, spark ignition engines

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 2.41 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Nguyen, Duc-Khanh, Louis Sileghem, and Sebastian Verhelst. 2018. “A Quasi-dimensional Combustion Model for Spark Ignition Engines Fueled with Gasoline–methanol Blends.” Proceedings of the Institution of Mechanical Engineers Part D-journal of Automobile Engineering 232 (1): 57–74.
APA
Nguyen, D.-K., Sileghem, L., & Verhelst, S. (2018). A quasi-dimensional combustion model for spark ignition engines fueled with gasoline–methanol blends. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, 232(1), 57–74.
Vancouver
1.
Nguyen D-K, Sileghem L, Verhelst S. A quasi-dimensional combustion model for spark ignition engines fueled with gasoline–methanol blends. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING. SAGE Publications; 2018;232(1):57–74.
MLA
Nguyen, Duc-Khanh, Louis Sileghem, and Sebastian Verhelst. “A Quasi-dimensional Combustion Model for Spark Ignition Engines Fueled with Gasoline–methanol Blends.” PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING 232.1 (2018): 57–74. Print.
@article{8545702,
  abstract     = {The current work provides a quasi-dimensional model for the combustion of methanol--gasoline blends. New correlations for the laminar burning velocity of gasoline and methanol are developed and used together with a mixing rule to calculate the laminar burning velocity of the blends. Several factors (such as the laminar burning velocity, initial flame kernel, residual gas fraction, turbulence, etc.) have been investigated and the sensitivity of these factors and the used sub-models on the predictive performance was assessed. The simulation results were compared with measurement data from two engines on different gasoline--methanol blends. The results show the importance of the laminar burning velocity correlation, the method of initializing combustion and the turbulent burning velocity model. The newly developed laminar burning velocity correlation of gasoline performed equally or better than the existing correlations and the newly developed correlation of methanol outperformed the other correlations. The initial flame kernel size had a strong influence on the ignition delay. Changing the initial flame kernel to reproduce the same ignition delay was very effective to improve the simulations. Several turbulent combustion models were tested with the newly developed laminar burning velocity correlations and optimized ignition delay. In conclusion, the model of Bradley reproduced the trend going from gasoline to methanol much better than others due to the inclusion of the Lewis number.},
  author       = {Nguyen, Duc-Khanh and Sileghem, Louis and Verhelst, Sebastian},
  issn         = {0954-4070},
  journal      = {PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING},
  keyword      = {Methanol--gasoline blends,alcohol,laminar burning velocity correlation,quasi-dimensional model,spark ignition engines},
  language     = {eng},
  number       = {1},
  pages        = {57--74},
  publisher    = {SAGE Publications},
  title        = {A quasi-dimensional combustion model for spark ignition engines fueled with gasoline--methanol blends},
  url          = {http://dx.doi.org/10.1177/0954407017728161},
  volume       = {232},
  year         = {2018},
}

Altmetric
View in Altmetric