Non-linear response of the flame velocity to moderately large curvatures in laminar jet flames of methane–air mixtures

García-Soriano, G.; Margenat, Sergio; Higuera, F. J.; Castillo, José L.; García‐Ybarra, P.L.

doi:10.1016/j.combustflame.2019.03.035

Cited by 3 publications

(2 citation statements)

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“…Experiments can clarify the law of accidents objectively and accurately. 20 − 22 Li et al 23 conducted a small-scale gas cloud explosion experiment through a balloon and determined that the overpressure and maximum flame velocity increase with the size of the gas cloud, and the relationship is not linear and cannot be used to predict large-scale gas explosions. Zhou et al 24 investigated the effect of built-in obstacles on unconfined methane explosion in a 1 m 3 cubic frame.…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al studied the explosion characteristics of methane near the explosion limit based on GRI-mech3.0 and found that with the increase in the volume fraction of the mixed gas, the peak flame temperature and the flammability exponent gradually increased when approaching the lower flammability limit. Experiments can clarify the law of accidents objectively and accurately. − Li et al conducted a small-scale gas cloud explosion experiment through a balloon and determined that the overpressure and maximum flame velocity increase with the size of the gas cloud, and the relationship is not linear and cannot be used to predict large-scale gas explosions. Zhou et al investigated the effect of built-in obstacles on unconfined methane explosion in a 1 m 3 cubic frame.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Study of Natural Gas Leakage and Explosion Characteristics

Cai

Liu

et al. 2022

ACS Omega

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Frequent occurrence of indoor natural gas explosion accidents seriously threatens the safety of people and property. To determine the law of indoor natural gas leakage and explosion hazards, based on experiment and simulation, the nature of natural gas explosion, the distribution law of natural gas volume fraction, flame propagation, temperature, and shock wave overpressure were studied. The results show that the flame structure can be divided into three zones, i.e., preheat zone, reaction zone, and product zone. OH + CO ⇔ H + CO 2 is the main exothermic reaction in the combustion process. The overall distribution law of natural gas volume fraction shows that the higher the position, the greater the volume fraction, and the closer the distance to the leak source at the same height, the greater the volume fraction, and the natural gas volume fraction of the hose falling off is the largest under different leakage conditions. The difference in the wrapping structure of the kitchen package has a significant impact on the diffusion distribution of natural gas. The flame development goes through five stages of ignition, slow burning, detonation, slow burning, and extinguishing. The indoor temperature reaches about 1400 °C. Although the simulated value of shock wave overpressure is larger than the experimental value, the relationship between overpressure and distance is expressed by Y = A + B * ln( X + C ). This study can provide certain technical support for natural gas accident rescue. The research can provide certain technical support for natural gas accident rescue and can also be used for accident investigation to form the determination procedure and method of leakage location and leakage amount.

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Section: Introductionmentioning

confidence: 99%