Gravitational effects on the SHS production of high porosity materials

K. G. Shkadinsky*, G. V. Shkadinskaya, B. J. Matkowsky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We introduce a model of combustion of porous samples in a gravitational field, in which the high temperature products can deform, to describe the synthesis of high porosity materials and its dependence on parameters of the problem. In addition to the main synthesis reaction we allow for the possibility of a gasification reaction of a special additive. We derive an equation for the elongation of the sample due to an increase in its porosity, which is caused by the additional gas produced in the main reaction or in the additive reaction or both. We also carry out numerical simulations of the model and compare to existing experimental results. We describe ignition, propagation, extinction and stability of propagating combustion waves and their dependence on various factors such as heat loss, gravity, Theological parameters and amount of additive. In particular, we show the possibility of synthesizing uniform high porosity materials in a microgravity environment.

Original languageEnglish (US)
Pages (from-to)313-342
Number of pages30
JournalCombustion science and technology
Volume118
Issue number4-6
DOIs
StatePublished - 1996
Externally publishedYes

Keywords

  • Combustion synthesis
  • Gravity
  • Microgravity porosity
  • SHS

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

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