Effect of thermal factors on the mechanisms of unstable combustion of gasless systems
The effect of thermal factors (the initial heat pulse, conditions for heat exchange with the environment or a forced change in the heat balance of the process) on the mechamism of unstable burning was studied. The investigation was carried out on thermite compositions initiated by the thermal wave of a burning igniting charge. Cylindrical specimens of thermite compositions (the igniter being a reaction system) were constricted by a spring holder and incinerated under different conditions. Combustion was examined visually, recorded by a Konvas cine camera and an FR-II photographic detector. A track is characteristically left on the surface of the burned-out specimen, which can be photographed. From these photographs it appears that after steady combustion the surface is even and quite smooth but, after oscillatory burning, it is speckled with a number of parallel-disposed circular depressions; disordered travel of the luminous points leaves short hachures and depressions; spin combustion leaves a spiral curve, surrounding the cylindrical specimen. The examination of the burned-out systems is a good addition to the generally accepted research techniques.
- Research Organization:
- Academy of Sciences of the USSR, Chernogolovka
- OSTI ID:
- 6738095
- Journal Information:
- Dokl. Phys. Chem. (Engl. Transl.); (United States), Vol. 260:4-6; Other Information: Translated from Dokl. Akad. Nauk SSSR; 260: No. 4-6, 1185-1188(Oct 1981)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHROMIUM COMPLEXES
COMBUSTION INSTABILITY
IRON COMPLEXES
ZIRCONIUM COMPLEXES
ALUMINIUM OXIDES
CALORIFIC VALUE
COMBUSTION KINETICS
DILUTION
EXPERIMENTAL DATA
IMAGES
TEMPERATURE EFFECTS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
COMBUSTION PROPERTIES
COMPLEXES
DATA
INFORMATION
INSTABILITY
KINETICS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
TRANSITION ELEMENT COMPLEXES
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry