Author
Abstract

In order to evaluate the potential of partial hydrocarbon substitution to improve the safety of hydrogen use in general and the performance of internal combustion engines in particular, the outward propagation and development of surface cellular instability of spark-ignited spherical premixed flames of mixtures of hydrogen, hydrocarbon, and air were experimentally studied at NTP condition in a constant-pressure combustion chamber. With methane, ethylene, and propane being the substituents, the laminar burning velocities, the Markstein lengths, and the propensity of cell formation were experimentally determined, while the laminar burning velocities and the associated flame thicknesses were computed using recent kinetic mechanisms. Results show substantial reduction of laminar burning velocities with hydrocarbon substitution, and support the potential of propane as a suppressant of both diffusional-thermal and hydrodynamic cellular instabilities in hydrogen-air flames. Such a potential, however, was not found for methane and ethylene as substituents. (C) 2003 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

Year of Publication
2004
Journal
International Journal of Hydrogen Energy
Volume
29
Number of Pages
867-879
ISBN Number
0360-3199
Accession Number
WOS:000221008300010
DOI
10.1016/j.ijhydene.2003.09.012
Alternate Journal
Int J Hydrogen Energ
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