The temperature field of a laminar diffusion dust flame
- Odessa State Univ. (Ukraine)
The temperature field of aluminum, laminar diffusion, dust flames (LDDF) has been studied using holographic interferometry. Radial temperature profiles of LDDF have been determined at twelve cross-section heights above the dust burner. The widths of the burning and preheating zones and the burning temperature have been investigated. The data obtained were used to elucidate the similarities and differences of LDDF and laminar diffusion gaseous flames, and to determine the controlling mechanism of dust combustion. The results indicate that aluminum dust (d = 4.8 [mu]m), nonpremixed with gaseous oxygen, burned out in diffusion regime. The discrepancy of the flame shapes obtained by holographic interferometry and photography suggests that the most intensive chemical reaction zone and the aluminum oxide condensation zone may be separated. The main differences between laminar diffusion dust and gaseous flames are due to the presence of condensed fuel and burning products in the LDDG flow field and to the absence of the diffusion of dispersed fuel particles to the gaseous oxidizer.
- OSTI ID:
- 6798967
- Report Number(s):
- CONF-940711-; CODEN: CBFMAO
- Journal Information:
- Combustion and Flame; (United States), Vol. 99:3-4; Conference: 25. international symposium on combustion, Irvine, CA (United States), 31 Jul - 5 Aug 1994; ISSN 0010-2180
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM
COMBUSTION KINETICS
DUSTS
FLAMES
TEMPERATURE DISTRIBUTION
ALUMINIUM OXIDES
HEAT TRANSFER
LAMINAR FLOW
ROCKET ENGINES
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
ELEMENTS
ENERGY TRANSFER
ENGINES
FLUID FLOW
HEAT ENGINES
KINETICS
METALS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry