Blast wave from a high-pressure gas tank rupture in a fire: Stand-alone and under-vehicle hydrogen tanks

Molkov, Vladimir; Kashkarov, S. S.

doi:10.1016/j.ijhydene.2015.07.001

Cited by 50 publications

(29 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The blast wave decayed faster along the tank axis (25 percent reduction of overpressure from 83 to 64.8 kPa at 4.2 m). The released mechanical energy was estimated as 7.33 MJ and chemical energy that contributed to the blast wave strength as 10.3 MJ [9]. The maximum reported diameter of the ¦reball was about 7.7 m (at time 45 ms after the tank rupture).…”

Section: Usa Testmentioning

confidence: 99%

Blast Wave and Fireball After Hydrogen Tank Rupture in a Fire

Molkov

Cirrone

Shentsov

et al. 2019

Advances in Pulsed and Continuous Detonation

View full text Add to dashboard Cite

The development of computational §uid dynamics (CFD) model to simulate blast wave and ¦reball dynamics after high-pressure hydrogen tank rupture in a ¦re is described. Parametric study is performed to de¦ne the e¨ect of submodels, numerical methods, and parameters on the convergence of the simulations and reproduction of experimental data. Experiments with initial pressure in hydrogen tank of 350 and 700 bar were used to validate the model. The e¨ect of hydrogen combustion and tank opening on the blast wave strength is assessed. The simulated cases include instantaneous tank opening and half tank opening.

show abstract

Section: Usa Testmentioning

confidence: 99%

Blast Wave and Fireball After Hydrogen Tank Rupture in a Fire

Molkov

Cirrone

Shentsov

et al. 2019

Advances in Pulsed and Continuous Detonation

View full text Add to dashboard Cite

show abstract

“…In 2015, a theoretical model of fireball diameter after high-pressure hydrogen tank rupture in a fire in the open atmosphere at ground level was published [23]. The model accounted for the observed in experiments' hemispherical rather than spherical shape of a fireball [4].…”

Section: Gaseous Hydrogen Tank Rupture In a Firementioning

confidence: 99%

Hydrogen Tank Rupture in Fire in the Open Atmosphere: Hazard Distance Defined by Fireball

et al. 2021

View full text Add to dashboard Cite

The engineering correlations for assessment of hazard distance defined by a size of fireball after either liquid hydrogen spill combustion or high-pressure hydrogen tank rupture in a fire in the open atmosphere (both for stand-alone and under-vehicle tanks) are presented. The term “fireball size” is used for the maximum horizontal size of a fireball that is different from the term “fireball diameter” applied to spherical or semi-spherical shape fireballs. There are different reasons for a fireball to deviate from a spherical shape, e.g., in case of tank rupture under a vehicle, the non-instantaneous opening of tank walls, etc. Two conservative correlations are built using theoretical analysis, numerical simulations, and experimental data available in the literature. The theoretical model for hydrogen fireball size assumes complete isobaric combustion of hydrogen in air and presumes its hemispherical shape as observed in the experiments and the simulations for tank rupturing at the ground level. The dependence of the fireball size on hydrogen mass and fireball’s diameter-to-height ratio is discussed. The correlation for liquid hydrogen release fireball is based on the experiments by Zabetakis (1964). The correlations can be applied as engineering tools to access hazard distances for scenarios of liquid or gaseous hydrogen storage tank rupture in a fire in the open atmosphere.

show abstract

“…where e P  is the external overpressure peak, Po is the ambient atmospheric pressure, is the mechanical energy coefficient (Molkov and Kashkarov, 2015). For the vented explosion from the side wall, it is assumed there is no reflection of blast wave from the fully-opened vent.…”

Section: Fig 20 3d View Of Monitors Near the Vent Of The Donor Tank And Data Recording Panel On The Acceptor Tank In Flacs Simulationmentioning

confidence: 99%

Numerical and analytical prediction of pressure and impulse from vented gas explosion in large cylindrical tanks

Hao

2019

Process Safety and Environmental Protection

View full text Add to dashboard Cite

This paper presents an extension of previous study on estimating the internal and external pressure and impulse from vented gas explosion in large cylindrical tanks. Unlike the smallmedium scale explosion from cylindrical tanks in previous work, explosion pressure and impulse from large-scale explosions are numerically and analytical investigated in this study.CFD simulations are conducted and validated by using experimental data. Sensitivity study on grid selection for large-scale explosion simulations is performed. By adopting two scale-up factors for the analytical correlations, the internal pressure and external pressure on adjacent tanks from vented gas explosion in a tank are accurately predicted. Parametric study of the effectiveness of separation gap between adjacent tanks on pressure and impulse mitigation is also carried out. Influences of the venting size, tank diameter and tank height on the effectiveness of separation distance for pressure and impulse mitigation from large-scale vented gas explosion in an adjacent tank are studied.

show abstract

Blast wave from a high-pressure gas tank rupture in a fire: Stand-alone and under-vehicle hydrogen tanks

Cited by 50 publications

References 6 publications

Blast Wave and Fireball After Hydrogen Tank Rupture in a Fire

Blast Wave and Fireball After Hydrogen Tank Rupture in a Fire

Hydrogen Tank Rupture in Fire in the Open Atmosphere: Hazard Distance Defined by Fireball

Numerical and analytical prediction of pressure and impulse from vented gas explosion in large cylindrical tanks

Contact Info

Product

Resources

About