CRITERION FOR QUASI-STATIC CONDITIONS FOR CONFINED BLAST PRESSURE OF A GAS-AIR MIXTURE IN PREMISES

Journal: Pozharovzryvobezopastnost/Fire and Explosion Safety (Vol.24, No. 8)

Publication Date: 2015-08-25

Authors : KOMAROV A. A. Doctor of Technical Sciences KAZENNOV V. V. Doctor of Technical Sciences GUSEV A. A. Candidate of Technical Sciences GROMOV N. V. Candidate of Technical Sciences;

Page : 56-61

Keywords : emergency blast; deflagration; overpressure; criterion for quasi-static conditions; gas-air mixture.;

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Abstract

The criterion for quasi-static conditions for overpressure caused by internal air-gas mixture blast is substantiated in the article. In this process the blast pressure is considered as a function of time and does not depend on spatial coordinates. The article reveals calculations justifying the criterion for quasi-static conditions for the blast pressure. It is shown that the blast in large premises partially filled with a gas may not comply with quasi-static conditions, which leads to the wave behavior of the blast loads. The blast resistance analysis for the facility is given for the case of quasi-static conditions violation.

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CRITERION FOR QUASI-STATIC CONDITIONS FOR CONFINED BLAST PRESSURE OF A GAS-AIR MIXTURE IN PREMISES

Abstract

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