The paper presents the design features of energy supply facilities of housing and communal services. It is revealed that external impacts of natural and man-made origin can cause an emergency situation at an industrial facility. The article presents a description of the origin and development of a shock wave and its consequences at industrial facilities. The focus is on the ventilation system as an object most susceptible to the impact of a shock wave. To ensure safety of industrial facilities, we propose to install explosion-proof valves. We describe boundary conditions for the operation of explosion-proof valves. We also show the results of mathematical modeling of a linear polynomial equation of state. In the ANSYS LS-DYNA numerical modeling environment, we set a two-dimensional problem, at the first stage of which we determined the distance from the initiated charge at which the shock wave front pressure is critical. A numerical study was performed for two scenarios—with and without the installation of an explosion-proof valve. In the paper we present the results of the study of dependence of pressure on time during the approach to the valve and dependence of pressure on time at the sensors. As a result of numerical modeling of loading of an ordinary explosion-proof ventilation valve by a shock wave, we established the feasibility of its use.

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Mathematical Modeling of Explosion-Proof Valve Loading in Ventilation Systems

  • S. A. Yaremenko,
  • O. I. Gaidash,
  • K. V. Garmonov,
  • M. N. Zherlykina

摘要

The paper presents the design features of energy supply facilities of housing and communal services. It is revealed that external impacts of natural and man-made origin can cause an emergency situation at an industrial facility. The article presents a description of the origin and development of a shock wave and its consequences at industrial facilities. The focus is on the ventilation system as an object most susceptible to the impact of a shock wave. To ensure safety of industrial facilities, we propose to install explosion-proof valves. We describe boundary conditions for the operation of explosion-proof valves. We also show the results of mathematical modeling of a linear polynomial equation of state. In the ANSYS LS-DYNA numerical modeling environment, we set a two-dimensional problem, at the first stage of which we determined the distance from the initiated charge at which the shock wave front pressure is critical. A numerical study was performed for two scenarios—with and without the installation of an explosion-proof valve. In the paper we present the results of the study of dependence of pressure on time during the approach to the valve and dependence of pressure on time at the sensors. As a result of numerical modeling of loading of an ordinary explosion-proof ventilation valve by a shock wave, we established the feasibility of its use.