This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Combustion Behavior of Leaking Hydrogen and Effects of Ceiling Variations
ISSN: 1946-3995, e-ISSN: 1946-4002
Published April 12, 2011 by SAE International in United States
Citation: Tamura, Y., TAKABAYASHI, M., Suzuki, J., Nohmi, T. et al., "Combustion Behavior of Leaking Hydrogen and Effects of Ceiling Variations," SAE Int. J. Passeng. Cars – Mech. Syst. 4(1):231-240, 2011, https://doi.org/10.4271/2011-01-0254.
Hydrogen concentration during combustion in a confined space with a ceiling was investigated. The results indicated that steady-state hydrogen concentration was highest at the ceiling surface for all hydrogen flow rates. When hydrogen concentration was 10-20%, weak flame propagation occurred at the ceiling surface, with the most easily burnable spots being dented areas such as seams, pores and creases on the ceiling surface. The unstable and limited nature of flame propagation at the ceiling surface was attributed to the relationship between temperature and hydrogen concentration in a confined space.