Vented explosion of hydrogen/air mixture: An intercomparison benchmark exercise

Vyazmina, Elena; Jallais, Simon; Krumenacker, Laurent; Tripathi, Amita; Mahon, A.; Commanay, J.; Kudriakov, Sergey; Studer, Etienne; Vuillez, T.; Rosset, F.D.

doi:10.1016/j.ijhydene.2018.07.195

Cited by 16 publications

(6 citation statements)

References 13 publications

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“…The BML modelling methodologies discussed in this paper are still frequently used in the context of explosions or internal combustion engines [55][56][57][58][59][60][61][62][63]. However, the findings of the current paper are not possible to extract from those studies.…”

Section: It Can Further Be Seen Frommentioning

confidence: 95%

Flame Surface Density based mean reaction rate closure for Reynolds averaged Navier Stokes methodology in turbulent premixed Bunsen flames with non-unity Lewis number

Rasool

Klein²,

Chakraborty³

2022

Combustion and Flame

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Section: It Can Further Be Seen Frommentioning

confidence: 95%

Flame Surface Density based mean reaction rate closure for Reynolds averaged Navier Stokes methodology in turbulent premixed Bunsen flames with non-unity Lewis number

Rasool

Klein²,

Chakraborty³

2022

Combustion and Flame

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“…8(a)) due to flame-acoustic interactions (Bauwens et al, 2010) cannot be reproduced by FLACS (Hisken, 2018). As a matter of fact, so far there is no reliable CFD tool being able to accurately calculate the acoustically driven pressures (Tolias et al, 2018;Vyazmina et al, 2018).…”

Section: Different Vent Opening Designs Of 95 Vol % Gas Concentration Casementioning

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

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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.

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“…Experimentally measured flame-front location, and time required for flame to reach the vent are important parameters to assess the applicability of the present model. Daubech et al [18][19][20] have measured time required for the flame to reach the vent, and the flame-front position with time (for case with 16.5% hydrogen) [18,21]. Comparison flame-front motion computed using this model and measured values are presented in Fig.…”

Section: Validation With Experimental Measurementsmentioning

confidence: 99%

Modular phenomenological model for vented explosions and its validation with experimental and computational results

Sinha

Rao

Wen

2019

Journal of Loss Prevention in the Process Industries

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The present study reports a modular engineering model for predicting peak pressure in vented explosions. Modelling assumptions are explained in detail and model components are validated against experimental and computational results. A basic version of this model is reported in our earlier paper (Sinha et al. [1]). Previous experimental and modelling efforts on vented explosion have primarily focussed on idealized condition of empty container with uniformly mixed fuel. However, in real accidents, there are often obstacles in flame path, and a leaked fuel may not get enough time to mix uniformly. These realistic accidental scenarios are accounted for in this extended model. The model is further simplified, and a final equation is proposed which depend on two fuel related parameters and two geometric parameters. Fuel parameters are pre-tabulated, and geometric parameters are easy to compute. Procedure to compute pressure generated by external explosion and internal pressure are outlined in detail. Experimental results available in open literature are used to evaluate model prediction capabilities. The model, in principle should be applicable for any gaseous fuel. However, the focus of the present investigation is to assess it for hydrogen explosions. In parallel to the modelling effort, a dedicated in-house solver HyFOAM is developed utilizing OpenFOAM platform. The HyFOAM predictions are validated against experimental results from the recently published test data involving hydrogen explosion in a 20-feet ISO container (Skjold et al. [2-4]). Moreover, as experimental investigations are expensive and require significant testing and safety infrastructure, a limited number of scenarios can be tested experimentally. In 2 addition to the experimental results, few more cases are simulated using HyFOAM and engineering model results are compared with the CFD results, and a reasonably good match is observed.

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Vented explosion of hydrogen/air mixture: An intercomparison benchmark exercise

Cited by 16 publications

References 13 publications

Flame Surface Density based mean reaction rate closure for Reynolds averaged Navier Stokes methodology in turbulent premixed Bunsen flames with non-unity Lewis number

Flame Surface Density based mean reaction rate closure for Reynolds averaged Navier Stokes methodology in turbulent premixed Bunsen flames with non-unity Lewis number

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

Modular phenomenological model for vented explosions and its validation with experimental and computational results

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