Mathematical modeling of phase separation in three-phase melt formed behind the combustion wave

International Conference on Synthesis and Consolidation of Powder Materials

Shkadinsky, K.G.^1 ; Ozerkovskaya, N.I.^2 ; Krishenik, P.M.^2

Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka

142432, Russia^1

Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka

142432, Russia^2

关键词: Centrifugal Forces;    Chemical interactions;    Combustion waves;    High-temperature combustion;    High-temperature synthesis;    Liquid products;    Subsequent cooling;    Technological process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/558/1/012046/pdf
DOI  :  10.1088/1757-899X/558/1/012046

来源: IOP

【 摘 要 】

A mathematical model of the exothermic chemical interaction of a high-calorie solid powder mixture in the presence of centrifugal forces is considered. The process of mathematical modeling is studied for the 3NiO + (2 + α)Al → Al2O3 + (3 -α)Ni + α NiAl thermite composition, as an example. Such models are used to describe the process of high-temperature synthesis for the production of target products in the combustion wave propagating through the initial mixture. This technological process represents a combination of high-temperature combustion with the transformation of the solid porous mixture to liquid products, their separation, and subsequent cooling. A distinctive feature of the proposed model is the use of a "through" description, which makes it possible to examine the mutual influence of the individual stages on the dynamics of the process. This feature provides a more realistic description of the actual process.