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- W4312465541 abstract "Purpose. Processes associated with the production, storage and transportation of liquefied natural gas require special attention in the field of ensuring their safety. The presence of obstacles at liquefied natural gas (LNG) storage facilities, their shape, location and other parameters in case of ignition can affect the process of gas-air cloud formation and combustion parameters. The impact of obstacles on the spread of LNG and explosion parameters of the gas-air cloud is still not thoroughly studied, which makes the present study relevant. Methods. Regulatory documents and methods for predicting parameters of a gas-air cloud explosion have been analyzed, studies on the influence of the obstacle diameter on the gas-air mixture explosion parameters have been carried out, the process of gas flowing round the obstacle has been analyzed. Findings. The theoretical study of the process of gas flowing around the obstacle made it possible to propose the dependence of the flame front speed acceleration on the streamlining of the obstacle. It is determined that a more streamlined body leads to less turbulization than a less streamlined one. Studies have shown that the increase in the cross-sectional area of the obstacle leads to the decrease in explosion parameters. At increasing the obstacle diameter from 6 to 8 mm, the maximum explosion pressure of the gas-air mixture behind the obstacle gradually decreases from 0.491 to 0.312 kPa, and at increasing the diameter up to 10 mm, the pressure decreases to 0.227 kPa. Research application field. The further direction of the study of the obstacle aerodynamic characteristics on the explosion parameters of the gas-air mixture for creating a theoretical basis for predicting gas-air cloud explosion parameters considering the cluttering of the area has been determined. Taking into account the obstacle aerodynamic characteristics will help reduce the explosion hazard of production facilities. Conclusions. Application of obstacles aerodynamic characteristics in gas-air cloud explosion prediction methods will allow determining more accurately the impact of obstacles on LNG propagation parameters and gas-air mixture explosion parameters. It is proposed to supplement the methodology for calculating the parameters of a gas-air cloud explosion with the coefficient taking into account the influence of the obstacle aerodynamic characteristics on the visible flame front propagation speed." @default.
- W4312465541 created "2023-01-04" @default.
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- W4312465541 date "2022-01-01" @default.
- W4312465541 modified "2023-10-14" @default.
- W4312465541 title "Impact of obstacles aerodynamic characteristics on gas-air mixture explosion parameters" @default.
- W4312465541 doi "https://doi.org/10.25257/fe.2022.3.56-62" @default.
- W4312465541 hasPublicationYear "2022" @default.
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