Gasoline flame behavior at elevated temperature and pressure


Type
Article
Change log
Authors
Ghiasi, G 
Ahmed, I 
Swaminathan, N 
Abstract

Freely propagating laminar premixed flames of stoichiometric mixtures of gasoline surrogate and iso-octane with air are computed using three chemi- cal kinetics mechanisms of varied complexity and detail. A good agreement of the computed burning velocities with past experimental data is observed. The burning velocities of these mixtures at temperature of 850 ≤ T ≤ 950 decrease with pressure up to about 3 MPa and starts to increase beyond this pressure. This contrasting behavior is related to the role of pressure dependent reaction involving OH and the influence of this radical on the fuel consumption rate. The results suggest that the overall order of the com- bustion reaction is larger than two at pressures higher than 3 MPa. Hence, one must be cautious in extending the commonly used laminar flame speed correlation with pressure to thermo-chemical conditions of interest for future engines.

Description
Keywords
Gasoline surrogate, Iso-octane, Laminar burning velocity, Pressure dependency
Journal Title
Fuel
Conference Name
Journal ISSN
0016-2361
1873-7153
Volume Title
238
Publisher
Elsevier BV
Sponsorship
King Abdulaziz City for Science and Technology (KACST) (unknown)
KACST