Modeling of hydrogen explosion on a pressure swing adsorption facility

Angers, B.; Hourri, A.; Bénard, Pierre; Demael, E.; Ruban, Sidonie; Jallais, Simon

doi:10.1016/j.ijhydene.2013.10.119

Cited by 25 publications

(8 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(iii) Avoid the compact arrangement of furniture and electrical appliances with different crosssectional dimensions along the direction of the window and door. e continuous cross-sectional mutation of congestion on the flame propagation path will induce strong turbulent 20 Advances in Civil Engineering…”

Section: Discussionmentioning

confidence: 99%

“…Table 2 shows the comparison of the peak overpressures of the two sets of grids. It can be seen that the relative discrepancy of the peak overpressure is within 9%, indicating that the two grid sizes have little influence on the calculation and can be applied to the present calculation [20]. To save time and improve calculation efficiency, the M1 grid was used in this study, and adaptive grid technology was used to automatically adjust the grid in certain areas to improve the accuracy of the numerical calculation.…”

Section: Verification Of Gridmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Congestion on Flow Field of Vented Natural Gas Explosion in a Kitchen

Pang

Jin

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

The process of gas explosion venting in a typical Chinese civil kitchen was investigated using computational fluid dynamics technology, focusing on the impact of the scale and cross-sectional characteristics of congestion, such as common furniture and electrical appliances, on the explosion flow-field parameters. An asymmetrical distribution of congestion will cause the uneven combustion of explosion flames in the kitchen. The flame will initially spread on one side of the room and then accelerate toward the surrounding areas, thereby increasing the risk of indoor gas explosion. The typical indoor overpressure change process can be divided into five stages, among which Stage V is found to be related to pseudoclosed combustion. Large-scale congestion has an obstructive effect on the explosion flow field, but it changes under certain conditions, while small-scale congestion only acts as a promoter. The flat congestion cross section helps maintain the stability of the flame structure, whereas the continuous and abrupt change of the congestion cross section can induce strong turbulent combustion. The research results provide a theoretical basis for the prevention and control of natural gas explosion hazards in civil kitchens from the perspective of congestion scale and cross-sectional mutation.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Verification Of Gridmentioning

confidence: 99%

Effect of Congestion on Flow Field of Vented Natural Gas Explosion in a Kitchen

Pang

Jin

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…Vyazmina et al researched effects of concentration, obstruction vent area, and ignition position on hydrogen vented explosions, and the simulation results are compared with the recent published experimental results to verify the feasibility of the software and provide suggestions for the application of the engineering model and FLACS [30]. Angers et al utilized FALCS software to model hydrogen explosion characteristics on a pressure swing adsorption device [31]. Lv et al studied the maximum explosion overpressure of gas in LNG (Liquefied Natural Gas) storage tank areas by numerical simulations and experiments [32].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Characteristics of Gas Explosion Process in Natural Gas Compartment of Utility Tunnel Using FLACS

et al. 2019

Sustainability

View full text Add to dashboard Cite

With the rapid urbanization in China, directly buried municipal pipelines have been gradually replaced by urban utility tunnels due to a serious shortage of urban underground spaces and weak disaster prevention of traditional municipal pipelines. The urban utility tunnels normally contain electricity pipelines, natural gas pipelines, heat pipelines, sewer pipelines, etc. If a natural gas pipeline leaks, a fire and explosion might occur and lead to serious consequences. In this study, the characteristics of gas explosion in a natural gas compartment of urban utility tunnel are investigated based on FLACS (Flame Acceleration Simulator) simulations. The results revealed that the flame profile undergoes two unstable flame stages. When the ignition position is set at the middle area (100.25, 1.2, 1.4 m) of the 200 m-long natural gas compartment, the maximum overpressure of the gas explosion in the 200 m-long natural gas compartment is 25.17 bar, which is the largest maximum overpressure under all gas explosion simulation setups. It is also found that the length of the natural gas compartment and different ignition positions have slight effects on the maximum overpressure. This study could provide technical support for structural strength design and division of the fireproofing area of the natural gas compartment in the utility tunnel, which is of great significance to improve urban safety during sustainable development.

show abstract

“…To verify the correctness of the model, explosion overpressures calculated in [22] were compared with the experimental results of Bauwens et al [23]. e variation trend of the two was similar, which proved the applicability of the numerical method [24]. Meanwhile, the effect of the grid size has been verified also.…”

Section: Verification Of Grid Independence and Experimentalmentioning

confidence: 71%

Numerical Simulation of Interaction between Large‐Scale Congestion and Vent during the Natural Gas Explosion in a Kitchen

Pang

Jin

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

The influence of large-scale congestion on a confined natural gas explosion in a typical Chinese kitchen was studied using the computational fluid dynamics technology. It was found that opening the explosion venting surface promotes the development of turbulence, flame propagation velocity, and multipeak overpressure in the explosion flow field. Large-scale congestion can significantly strengthen the influence of the explosion venting surface on the flow field; the congestion and the explosion venting surface have a synergistic effect on the explosion flow field. At the moment of gas explosion, the flow fields in each area of the kitchen exhibit different distribution characteristics. A flow field near small-scale congestion is more likely to produce greater turbulence, combustion rate, and flame speed. The obstruction effect of large-scale congestion perpendicular to the flame propagation direction is dominant. The indoor flame propagation speed and overpressure development speed increase and the peak combustion rate and indoor peak overpressure decrease with an increase in obstacle blockage. Increases in the large-scale volume congestion rate and volume blockage in the kitchen induce changes in the indoor flame propagation mode and increase the external explosion overpressure. This paper investigated the correlation behavior between large-scale congestion and vent surface in a typical Chinese civil kitchen during natural gas explosion process and provided important support for understanding the mechanism of congestion on gas explosion process and the distribution of explosion hazards in a kitchen.

show abstract

Modeling of hydrogen explosion on a pressure swing adsorption facility

Cited by 25 publications

References 15 publications

Effect of Congestion on Flow Field of Vented Natural Gas Explosion in a Kitchen

Effect of Congestion on Flow Field of Vented Natural Gas Explosion in a Kitchen

Numerical Analysis of the Characteristics of Gas Explosion Process in Natural Gas Compartment of Utility Tunnel Using FLACS

Numerical Simulation of Interaction between Large‐Scale Congestion and Vent during the Natural Gas Explosion in a Kitchen

Contact Info

Product

Resources

About