Imitation of the Explosion Effects in a Shock Tube with a Focusing Element

S. P. Medvedev; Медведев С. П.; S. V. Khomik; Хомик С. В.; O. G. Maximova; Максимова О. Г.; E. K. Anderzhanov; Андержанов Э. К.; A. N. Ivantsov; Иванцов А. Н.; V. N. Mikhalkin; Михалкин В. Н.; A. M. Tereza; Тереза А. М.

doi:10.31857/S0207401X23080083

Imitation of the Explosion Effects in a Shock Tube with a Focusing Element

Authors: Medvedev S.P.¹, Khomik S.V.¹, Maximova O.G.¹, Anderzhanov E.K.¹, Ivantsov A.N.¹, Mikhalkin V.N.¹^,2, Tereza A.M.¹
Affiliations:
1. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences
2. Academy of the State Fire Service, Ministry of Emergency Situations of Russia
Issue: Vol 42, No 8 (2023)
Pages: 56-60
Section: Combustion, explosion and shock waves
URL: https://cardiosomatics.orscience.ru/0207-401X/article/view/674840
DOI: https://doi.org/10.31857/S0207401X23080083
EDN: https://elibrary.ru/IGUOVO
ID: 674840

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Abstract

The results of the experiments performed in a cylindrical shock tube (ST) equipped with a focusing element in the form of a truncated cone at the end are analyzed. It is found that the maximum pressure at the top of the cone is greater by several factors than the pressure when the shock wave is reflected from a flat wall. Close agreement is obtained between the measured pressure profiles and the results of numerical simulation of shock wave focusing using the GasDynamicsTool (GDT) package in a three-dimensional formulation. It is shown that the dependence of pressure on time during focusing is similar to that observed in the case of a normal reflection of a shock wave generated by an explosion of a trinitrotoluene (TNT) charge. The results obtained and the developed technique make it possible to imitate the high-explosive action of an explosion without the use of condensed explosives.

Keywords

imitation, explosion action, shock wave, shock tube, focusing, numerical simulation

References

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