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

9e ISHPMIE (International Symposium on Hazard, Prevention, and Mitigation of Industrial Explosions) / 22th-27th July 2012, Cracow (Poland)​

Document type > *Congrès/colloque

Keywords >

Research Unit > IRSN/DSR/SAGR/BPhAG

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

Publication Date > 22/07/2012

Summary

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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Involved IRSN laboratory

Physics on ​Severe Accidents Section (BPhAG)

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