Physics of spontaneous ignition of high-pressure hydrogen release and transition to jet fire

Maxim Bragin, Vladimir Molkov

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

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.
LanguageEnglish
Pages2589-2596
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number3
DOIs
Publication statusPublished - 2011

Fingerprint

Large eddy simulation
ignition
Ignition
Fires
large eddy simulation
Physics
tubes
Hydrogen
physics
hydrogen
Rupture disks
Safety engineering
flames
High speed photography
Hydrogen storage
high speed photography
Chemical reactions
Boundary layers
Vortex flow
boundary layers

Cite this

@article{0b93d3741b524359bba6dbfcc11d0e6f,
title = "Physics of spontaneous ignition of high-pressure hydrogen release and transition to jet fire",
abstract = "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.",
author = "Maxim Bragin and Vladimir Molkov",
year = "2011",
doi = "10.1016/j.ijhydene.2010.04.128",
language = "English",
volume = "36",
pages = "2589--2596",
number = "3",

}

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 journalArticle

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 -