RADIAL COMBUSTION DYNAMICS IN Fe{sub 2}O{sub 3}/Al THERMITE: VARIABILITY OF THE FLAME PROPAGATION PROFILES

Journal Article · Mon Dec 28 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3295165· OSTI ID:21366852

Duraes, L; Portugal, A ^[1]; Plaksin, I; Campos, J ^[2]; Antunes, J ^[3]

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1. Dept. Chem. Engr., Fac. Sc. Tech., Univ. Coimbra, 3030-790 Coimbra (Portugal)
2. Ledap, Dept. Mech. Engr., Fac. Sc. Tech., Univ. Coimbra, 3030-788 Coimbra (Portugal)
3. Dept. Chem. Environ. Engr., Polyt. Inst. Tomar, 2300-313 Tomar (Portugal)

In this work, the radial combustion in thin circular samples of stoichiometric and over aluminized Fe{sub 2}O{sub 3}/Al mixtures is studied. Two confinement materials are tested: stainless steel and PVC. The combustion front profiles are registered by digital video-crono-photography. The radial geometry allows an easy detection of sample heterogeneities, via the circularity distortions of the combustion front profiles. The influence of the Al content in the mixtures and the type of confinement on the combustion propagation dynamics is analyzed. Additionally, an asymmetry parameter of the combustion front profiles is defined and statistically treated via ANOVA. Although the type of confinement contributes more than the mixture composition to the variability of the asymmetry parameter, they both have a weak influence. The main source of variability is the intrinsic variations of the samples, which are due to their heterogeneous character.

• OSTI ID: 21366852
• Journal Information: AIP Conference Proceedings, Vol. 1195, Issue 1; Conference: American Physical Society Topical Group on shock compression of condensed matter, Nashville, TN (United States), 28 Jun - 3 Jul 2009; Other Information: DOI: 10.1063/1.3295165; (c) 2009 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ASYMMETRY
COMBUSTION
EXPLOSIONS
FERRITES
FLAME PROPAGATION
GEOMETRY
IRON OXIDES
MIXTURES
PHOTOGRAPHY
PVC
SHOCK WAVES
STAINLESS STEELS
STOICHIOMETRY
ALLOYS
CARBON ADDITIONS
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
DISPERSIONS
FERRIMAGNETIC MATERIALS
HALOGENATED ALIPHATIC HYDROCARBONS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
IRON COMPOUNDS
MAGNETIC MATERIALS
MATERIALS
MATHEMATICS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLYMERS
POLYVINYLS
STEELS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT ALLOYS
TRANSITION ELEMENT COMPOUNDS