2014 1(14)

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Pages:

121 - 126

Language:

RU

Ref.:

8


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CALCULATION OF EXPLOSION CHARACTERISTICS OF SILANE-AIR MIXTURE

Fomin P.A.1, Voronin D.V.1, Fedorov A.V.2, Chen J.3

1 Lavrentyev Institute of Hydrodynamics SB RAS, Novosibirsk, Russia
2 Khristianovich Institute Of Theoretical And Applied Mechanics SB RAS, Novosibirsk, Russia
3 National Kaohsiung First University of Science and Technology, Kaohsiung, Taiwan


Citation:

Fomin, P.A., Voronin, D.V., Fedorov, A.V. and Chen, J., (2014) Calculation of explosion characteristics of silane-air mixture, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(14), PP. 121 - 126.


Keywords:

silane; detonation cell; micro-particles; explosion mitigation; detonation suppression


Abstracts:

Arrhenius formula for calculating the induction period of chemical reaction in silane-air mixtures at elevated initial parameters is proposed. Detonation cell size in stoichiometric silane-air mixture is estimated for the first time. According to the estimations the transverse cell size is 2 cm. Such small value of the cell size indicates that the detonation hazard of the mixture is very high. Parameters of a steady detonation wave and relative detonation cell size in the mixture with chemically inert particles (aluminium oxide) are calculated. The minimal mass fraction of the condensed phase, the total mass and the characteristic size of the cloud of the microparticles, which are necessary for successive suppression of a multi-front detonation wave in a stoichiometric silane-air mixture, are estimated. Parameters of instantaneous explosions of the gas-particles mixture at constant pressure and temperature are calculated. The process of silane leak into cubic volume from a high-pressure vessel is considered theoretically. The spatial profiles of pressure, temperature, velocity of the gas and mass fraction of silane in silane-air cloud are calculated. Dynamics of the cloud, obtained in the calculations, qualitatively correspond to the dynamics of a smoke cloud, caused by it leak from high-pressure vessel into a cubic volume of the same size.


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