Simulation of thermal hazards from hydrogen under-expanded jet fire

Cirrone, Donatella; Макаров, Д. Н.; Molkov, Vladimir

doi:10.1016/j.ijhydene.2018.08.106

Cited by 43 publications

(11 citation statements)

References 18 publications

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“…As shown in Figure 2a, comparing the mass flow rate measured by Acton's experiment [13] with the calculations, the results show that without considering the discharge coefficient (C d = 1.0), the calculated mass flow rates of the two experiments are significantly higher than the measured results. According to the work of Cirrone et al [42], the results via CFD simulation agree with the measured results when the discharge coefficient is equal to 0.7. By adjusting the discharge coefficient from 0.9 to 0.6, the calculated and measured results are compared.…”

Section: Verification Of High-pressure Gas Transient Leakage Modelsupporting

confidence: 70%

“…Jin et al [41] applied ANSYS Fluent to simulate a spontaneous combustion of pressurized hydrogen gas. Cirrone et al [42] used ANSYS Fluent to reproduce the hydrogen jet fire experiments conducted by Proust et al [14]. The thermal hazards of cryogenic hydrogen jet fires were also numerically analyzed by Cirrone et al [43,44], and the performances of three turbulence models, i.e., the standard k − ε, RNG k − ε and realizable k − ε models, were compared.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation and Consequence Analysis of Full-Scale Jet Fires for Pipelines Transporting Pure Hydrogen or Hydrogen Blended with Natural Gas

Li,

Wang,

Jiang

et al. 2024

Fire

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The use of existing natural gas pipelines for the transport of hydrogen/natural gas mixtures can achieve large-scale, long-distance and low-cost hydrogen transportation. A jet fire induced by the leakage of high-pressure pure hydrogen and hydrogen-blended natural gas pipelines may pose a severe threat to life and property. Based on the Abel–Nobel equation of state and a notional nozzle model, an equivalent pipe leakage model is established to simulate high-pressure pipeline gas leakage jet fire accidents. Large-scale high-pressure hydrogen and natural gas/hydrogen mixture jet fires are simulated, showing the jet impingement process and obtaining an accurate and effective simulation framework. This framework is validated by comparing the simulated and experimental measured results of flame height, flame appearance and thermal radiation. Several combustion models are compared, and the simulated data show that the non-premixed chemical equilibrium combustion model is superior to other combustion models. The influence of the pipe pressure and the hydrogen blending ratio on the consequences of natural gas/hydrogen mixture pipeline leakage jet fire accidents is explored. It is found that when the hydrogen blending ratio is lower than 22%, the increase in the hydrogen blending ratio has little effect on the decrease in the thermal radiation hazard distance.

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Section: Verification Of High-pressure Gas Transient Leakage Modelsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Consequence Analysis of Full-Scale Jet Fires for Pipelines Transporting Pure Hydrogen or Hydrogen Blended with Natural Gas

Li,

Wang,

Jiang

et al. 2024

Fire

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“…In addition, the blowdown model developed by Molkov et al [23] was implemented. Cirrone et al [28] found that the adiabatic blowdown model provided better agreement with experiment than an isothermal approach for the initial stage of a release, whilst the isothermal blowdown model provided better agreement in the later stages of a release. Thus, an adiabatic blowdown model has been used in this study, as the initial stage of the release is of most interest.…”

Section: Notional Nozzle Model and Blowdown Processmentioning

confidence: 99%

Dispersion of hydrogen release in a naturally ventilated covered car park

Hussein

Brennan

Molkov

2020

International Journal of Hydrogen Energy

Self Cite

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Highlights Hydrogen release from onboard storage in a covered car park is numerically investigated  Release and dispersions from a range of TPRD diameters is simulated  A 0.5 mm diameter TPRD was found to be inherently safer for 700 bar storage  The angle of TPRD release was shown to have implications for passenger egress  Results support the inherently safe design of hydrogen fuel cell vehicles *Highlights (for review)

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“… Hydrogen Vertical Simulated the flame according to EDC combustion, and DO radiation, Realizable k-ε turbulence models. Cirrone et al. (2019b) CFD code.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of radiation models on propane jet fires based on experimental and computational studies

Mashhadimoslem

Ghaemi

Palacios

2021

Heliyon

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Radiation as a consequence of jet fires is one of the significant parameters in process industry events. In the present work, the open field vertical propane jet fire was studied via experimental and computational fluid dynamics (CFD). The predicted values of radiation were verified at three locations in the horizontal direction from the jet fire. In the simulation section, four radiation models of Monte Carlo (MC), P-1, Discrete Transfer (DT), and Rosseland were applied to find the fine model for simulating the jet fire. Shear Stress Transport (SST) and Eddy Dissipation Concept (EDC) models are employed for combustion and turbulence, respectively. The estimated data by the simulation demonstrated that the MC radiation is better than the other models with an average error of 5% for predicted incident radiation from the jet flame axis. Also, the P-1 radiation model had an above 65% error at around the jet fire, but due to the error of less than 15% estimated by MC and DT models, these radiation models could simulate the jet flame radiation. The simulation outcomes proved that the Rosseland radiation model is not applicable owing to a lack of accurate temperature prediction.

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Simulation of thermal hazards from hydrogen under-expanded jet fire

Cited by 43 publications

References 18 publications

Numerical Simulation and Consequence Analysis of Full-Scale Jet Fires for Pipelines Transporting Pure Hydrogen or Hydrogen Blended with Natural Gas

Numerical Simulation and Consequence Analysis of Full-Scale Jet Fires for Pipelines Transporting Pure Hydrogen or Hydrogen Blended with Natural Gas

Dispersion of hydrogen release in a naturally ventilated covered car park

A comparative study of radiation models on propane jet fires based on experimental and computational studies

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