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Selection of Material and Thickness of the Protective Wall in the Conditions of a Hydrogen Explosion of Various Power

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Abstract:

The main purpose of this study is a numerical assessment of the consequences of an explosion of a hydrogen-air cloud on the personnel of a hydrogen fueling station and the strength of a protective solid wall of certain dimensions. An explosive gas mixture is formed as a result of the destruction of high-pressure cylinders, the number of which determines the size of the cloud, the power of the explosion, and the scale of the consequences of environmental impact. To obtain the spatio-temporal distribution of the maximum overpressure and the impulse of the shock wave compression phase, a mathematical model of the dispersion of an active gaseous admixture is used, taking into account the chemical interaction with air oxygen. The probable consequences of the shock-impulse impact on the personnel at the control point are carried out using probit analysis. The values of the maximum bending moment and stress at the base of the protective wall, which result from the impact of the blast wave, are used to deterministically estimate the minimum wall thickness necessary for the safe operation of the protective device. The mathematical model takes into account the complex terrain and the three-dimensional non-stationary nature of the shock wave propagation process, and it is a source of data necessary to solve the problem of the strength of solid objects located in the area of baric perturbation of the gaseous medium. The developed methodology makes it possible to carry out a comparative analysis of the effectiveness of protective structures in relation to the power of the explosion.

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Periodical:

Key Engineering Materials (Volume 952)

Pages:

121-129

DOI:

https://doi.org/10.4028/p-ST1VeT

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Online since:

August 2023

Authors:

Yurii Skob*, Yuriy Dreval, Alexey Vasilchenko, Roman Maiboroda

Keywords:

Allowable Stress, Bending Moment, Cantilever Beam, Eardrum Rupture, Gas Mixture Explosion, Lethal Injury, Maximum Overpressure, Pressure Shock Wave, Probit Analysis

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© 2023 Trans Tech Publications Ltd. All Rights Reserved

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