Abstract
To satisfy the needs of large-scale hydrogen combustion and explosion simulation, a method is presented to establish single-step chemistry model and transport model for fuel-air mixture. If the reaction formula for hydrogen-air mixture is H
2
+0.5O
2
→H
2
O, the reaction rate model is ω̇ = 1.13×10
15
[H
2
][O
2
]exp(−46.37
T
0
/
T
) mol (cm
3
s)
−1
, and the transport coefficient model is µ=
K/C
P
=
ρD
=7.0×10
−5
T
0.7
g (cm s)
−1
. By using current models and the reference model to simulate steady Zeldovich-von Neumann-Doering (ZND) wave and free-propagating laminar flame, it is found that the results are well agreeable. Additionally, deflagration-to-detonation transition in an obstructed channel was also simulated. The numerical results are also well consistent with the experimental results. These provide a reasonable proof for current method and new models.