Abstract
| Language | English |
|---|---|
| Pages | 2589-2596 |
| Journal | International Journal of Hydrogen Energy |
| Volume | 36 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2011 |
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Physics of spontaneous ignition of high-pressure hydrogen release and transition to jet fire. / Bragin, Maxim; Molkov, Vladimir.
Vol. 36, No. 3, 2011, p. 2589-2596.Research output: Contribution to journal › Article
TY - JOUR
T1 - Physics of spontaneous ignition of high-pressure hydrogen release and transition to jet fire
AU - Bragin, Maxim
AU - Molkov, Vladimir
PY - 2011
Y1 - 2011
N2 - The aim of this study is to gain an insight into the physical phenomena underlying the spontaneous ignition of hydrogen following a sudden release from high-pressure storage and transition to sustained jet fire. The modelling and large-eddy simulation (LES) of the spontaneous ignition dynamics in a tube with a non-inertial rupture disk separating the high-pressure hydrogen storage and the atmosphere is described. Numerical experiments confirmed that due to the stagnation conditions a chemical reaction first commences in the tube boundary layer, and subsequently propagates throughout the tube cross-section. The dynamics of flame formation outside the tube, simulated by the LES model, has reproduced the combustion patterns, including vortex induced “flame separation”, which have been experimentally observed by high-speed photography. It is concluded that the LES model can be applied for hydrogen safety engineering, e.g. for the development of innovative pressure relief devices.
AB - The aim of this study is to gain an insight into the physical phenomena underlying the spontaneous ignition of hydrogen following a sudden release from high-pressure storage and transition to sustained jet fire. The modelling and large-eddy simulation (LES) of the spontaneous ignition dynamics in a tube with a non-inertial rupture disk separating the high-pressure hydrogen storage and the atmosphere is described. Numerical experiments confirmed that due to the stagnation conditions a chemical reaction first commences in the tube boundary layer, and subsequently propagates throughout the tube cross-section. The dynamics of flame formation outside the tube, simulated by the LES model, has reproduced the combustion patterns, including vortex induced “flame separation”, which have been experimentally observed by high-speed photography. It is concluded that the LES model can be applied for hydrogen safety engineering, e.g. for the development of innovative pressure relief devices.
U2 - 10.1016/j.ijhydene.2010.04.128
DO - 10.1016/j.ijhydene.2010.04.128
M3 - Article
VL - 36
SP - 2589
EP - 2596
IS - 3
ER -