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Determination of explosion combustion parameters of H2/O2/N2 mixtures



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9e ISHPMIE (International Symposium on Hazard, Prevention, and Mitigation of Industrial Explosions) / 22-27 juillet 2012, Cracovie (Pologne)

Type de document > *Congrès/colloque

Mots clés >

Unité de recherche > IRSN/DSR/SAGR/BPhAG

Auteurs > SABARD Jérémy, GOULIER Jules, CHAUMEIX Nabiha, MEVEL Rémy, STUDER Etienne, BENTAIB Ahmed

Date de publication > 22/07/2012


​The aim of the present work is to assess the risk of explosion of {H2 / O2 / N2}

mixtures through the characterization of their fundamental combustion properties: (i)

laminar flame speed (SL°), maximum combustion pressure (PMAX) and pressure rise

(dP/dt)MAX in a spherical vessel ; (ii) detonation speed and cell size using a cylindrical

detonation tube. Equilibrium calculations were made to obtain: (i) theoretical

maximum pressure (PAICC), (ii) the Theoretical Chapman-Jouguet detonation velocity.

Simulated laminar flame speeds using COSILAB have been obtained. A suitable

model has been selected in order to determine the activation energy of these mixtures.

The proportionality factor between the detonation cell size and the induction length

has been derived based on the ZND model and using a detailed kinetic mechanism.

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Laboratoire IRSN impliqué

Bureau de physique des accidents graves (BPhAG)