Instability of a combustion model with surface vaporization and overheat in the condensed phase

被引:0
作者
L. K. Gusachenko
V. E. Zarko
A. D. Rychkov
机构
[1] Russian Academy of Sciences,Institute of Chemical Kinetics and Combustion, Siberian Division
[2] Russian Academy of Sciences,Institute of Computational Technologies, Siberian Division
来源
Combustion, Explosion and Shock Waves | 1997年 / 33卷
关键词
Heat Flux; Energetic Material; Burning Surface; Combustion Model; Bubble Motion;
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学科分类号
摘要
Using numerical modeling, we have revealed the instability of a steady-state combustion regime which was previously obtained using analytical methods in the substance-combustion model with surface vaporization and with exothermic reactions in the condensed phase which are intense enough to form a maximum of temperature underneath the surface. The instability has been studied analytically using the method of small perturbations to eliminate the version of its nonphysical (numerical) character. Steady-state combustion regimes with maxima on the condensed-phase temperature profile are shown to be actually unsteady. It is suggested that convection in a liquid-subsurface layer owing to bubble motion caused by the Marangoni effect should be taken into account to describe correctly the experimentally observed steady-state regimes with a leading role of the condensed phase.
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页码:34 / 40
页数:6
相关论文
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