Effect of oxidizer-particle size on the unsteady-state combustion time of a composite solid fuel during a pressure drop

Journal Article · Sun Nov 01 00:00:00 EST 1987 · Combust., Explos. Shock Waves (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00748794· OSTI ID:7003748

Ilyukhin, V S; Margolin, A D; Valeev, I N; Lebedev, A A

A rapid variation of pressure during the combustion of a composite solid fuel alters considerable the composition and temperature of the combustion products during the unsteady-state-combustion period. The time required to reach a new steady-state combustion regime following a sharp rise in pressure is proportional to the burnup time of a grain of oxidizer. The authors considered the dependence of the duration of the transition regime of combustion on the size of PCA crystals during a pressure drop. The results indicate that, both for a pressure drop and for a rise in pressure, the time required to arrive at a steady-state combustion regime is proportional to the burnup time of a grain of oxidizer, rather than to the warm up time of the condensed phase as is the case for homogeneous fuels.

• OSTI ID: 7003748
• Journal Information: Combust., Explos. Shock Waves (Engl. Transl.); (United States), Vol. 23:3; Other Information: Translated from Fiz. Goreniya Vzryva; 23: No. 3, 94-95(May-Jun 1987)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
OXIDIZERS
COMBUSTION KINETICS
PARTICLE SIZE
SOLID FUELS
PRESSURE EFFECTS
COMBUSTION INSTABILITY
COMBUSTION PROPERTIES
CRYSTALS
FLAME PROPAGATION
MATHEMATICAL MODELS
OSCILLOGRAPHS
PRESSURE DROP
STEADY-STATE CONDITIONS
THERMAL DIFFUSIVITY
TIME DEPENDENCE
CHEMICAL REACTION KINETICS
ELECTRONIC EQUIPMENT
EQUIPMENT
FUELS
INSTABILITY
KINETICS
PHYSICAL PROPERTIES
REACTION KINETICS
SIZE
THERMODYNAMIC PROPERTIES
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry