Computational investigation of heat and mass transfer processes in a gel-like fuel ignited by a limited-capacity source

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16 Citations (Scopus)

Abstract

We have carried out a computational investigation of the interrelated processes of heat and mass transfer, exothermal (crystallization) and endothermal (melting and evaporation) phase transitions, and chemical reactions resulting from ignition of a gel-like condensed substance. The dependence of the main integral characteristic of the process - the ignition delay time - on the temperature of the local heating source has been established. Limiting ignition conditions have been revealed. The position of the zone of the leading oxidation reaction relative to the interface between the heated particle and the fuel has been determined. A comparison has been made between the ignition conditions of condensed substances in different aggregate states under local heating.

Original languageEnglish
Pages (from-to)695-704
Number of pages10
JournalJournal of Engineering Physics and Thermophysics
Volume86
Issue number3
DOIs
Publication statusPublished - May 2013

Fingerprint

ignition
mass transfer
Ignition
Mass transfer
Gels
heat transfer
gels
Heat transfer
Heating
heating
Chemical reactions
Time delay
chemical reactions
Evaporation
Melting
time lag
Crystallization
Phase transitions
melting
evaporation

Keywords

  • Crystallization
  • Evaporation
  • Gel-like fuel
  • Heat and mass transfer
  • Heated particle
  • Ignition
  • Melting
  • Oxidation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering(all)

Cite this

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AU - Strizhak, P. A.

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N2 - We have carried out a computational investigation of the interrelated processes of heat and mass transfer, exothermal (crystallization) and endothermal (melting and evaporation) phase transitions, and chemical reactions resulting from ignition of a gel-like condensed substance. The dependence of the main integral characteristic of the process - the ignition delay time - on the temperature of the local heating source has been established. Limiting ignition conditions have been revealed. The position of the zone of the leading oxidation reaction relative to the interface between the heated particle and the fuel has been determined. A comparison has been made between the ignition conditions of condensed substances in different aggregate states under local heating.

AB - We have carried out a computational investigation of the interrelated processes of heat and mass transfer, exothermal (crystallization) and endothermal (melting and evaporation) phase transitions, and chemical reactions resulting from ignition of a gel-like condensed substance. The dependence of the main integral characteristic of the process - the ignition delay time - on the temperature of the local heating source has been established. Limiting ignition conditions have been revealed. The position of the zone of the leading oxidation reaction relative to the interface between the heated particle and the fuel has been determined. A comparison has been made between the ignition conditions of condensed substances in different aggregate states under local heating.

KW - Crystallization

KW - Evaporation

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KW - Heat and mass transfer

KW - Heated particle

KW - Ignition

KW - Melting

KW - Oxidation

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