Specifics of Explosion-Venting Structures Providing Acceptable Indoor Explosion Loads

Комаров, А. А.; Korolchenko, D. A.; Громов, Н В; Korolchenko, A. D.

doi:10.3390/app12010025

Cited by 2 publications

(1 citation statement)

References 32 publications

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“…This can be vividly seen in Figure 18, where the high-frequency part of the Load 1 spectrum is lower than the respective part of the Load 2 spectrum. Hence, people will perceive a weak explosion without turbulizers (Experiment 2) as more intensive compared to the one where turbulizers were present (Experiment 1) [22][23][24][25]. It should also be noted that 2.5 dB is quite a noticeable value for a human.…”

Section: Discussion Of Experiments Resultsmentioning

confidence: 99%

Specific Aspects of Modeling Gas Mixture Explosions in the Atmosphere

Комаров

Korolchenko

Громов

et al. 2023

Fire

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Aspects of mathematical and physical modeling of deflagration explosions emerging during atmospheric (outdoor) accidental explosions are addressed. It has been demonstrated that when physically modeling accidental deflagration explosions, a stoichiometric mixture in the shape of a sphere or hemisphere supported by the ground should be used. This allows us to research the parameters of blast loads for the worst-case accidental scenarios or address the accident using the most conservative approach. A technique has been provided allowing one to create a mixture of a given blend composition in the shape of a sphere or hemisphere supported by the ground in outdoor conditions. It has been demonstrated that there is an ability to conduct modeling studies of accidental atmospheric explosions. We have provided examples of modeling studies of accidental atmospheric explosions; a methodology for analyzing experimental results has also been reviewed. The article discusses the mathematical modeling of outdoor (unobstructed) accidental deflagration explosions. It has been demonstrated that it is most reasonable to base computational experiments on linearized (acoustic) equations of continuum motion, as the visible flame propagation rate emerging during explosive combustion is small (compared to the speed of sound). There has been a satisfactory agreement between the numerical analysis and the experimental data.

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Section: Discussion Of Experiments Resultsmentioning

confidence: 99%

Specific Aspects of Modeling Gas Mixture Explosions in the Atmosphere

Комаров

Korolchenko

Громов

et al. 2023

Fire

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Processing of experimental data describing internal deflagration explosions

Komarov,

Azamov

2023

E3S Web of Conf.

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This article is devoted to issues related to experimental studies of internal deflagration explosions or emergency explosions occurring inside buildings and premises. In internal emergency explosions, the main role in reducing the explosive pressure to a safe level is played by discharge openings blocked by safety structures (SS). As discharge openings, windows are often used, covered with glazed window blocks, or opened explosion venting structures (EVS). The article deals with processing experimental data obtained in the study of deflagration explosions occurring inside buildings and premises. The main features and difficulties that arise while analyzing experimental materials are described. The article considers the general methodology for processing experimental data to study deflagration explosions inside buildings and premises. Examples of processing materials from experiments performed in chambers equipped with a transparent edge allow high-speed filming of the explosive combustion process inside the chamber. The article presents a technique that allows, based on data processing on the overpressure in the explosion chamber, to obtain complete characteristics of the loads that occur in the experimental chamber during an internal deflagration explosion. The proposed technique makes it possible to abandon the transparent edge of the explosion chamber and obtain data on the explosion process based on the numerical processing of the excess pressure created in the explosion chamber. An example of processing a full-scale experiment to determine the effectiveness of a real explosion venting structure (EVS) is given.

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Specifics of Explosion-Venting Structures Providing Acceptable Indoor Explosion Loads

Cited by 2 publications

References 32 publications

Specific Aspects of Modeling Gas Mixture Explosions in the Atmosphere

Specific Aspects of Modeling Gas Mixture Explosions in the Atmosphere

Processing of experimental data describing internal deflagration explosions

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