Characteristics of a coherent jet enshrouded in a supersonic fuel gas

Based on a current coherent jet, this study proposes a supersonic combustion (SC) coherent jet in which the main oxygen jet is surrounded by a supersonic fuel gas. The characteristics of the proposed coherent jet are analyzed using experimental methods and numerical simulations in the high-temperatu...

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Bibliographic Details
Published in:International journal of minerals, metallurgy and materials metallurgy and materials, 2020-02, Vol.27 (2), p.173-180
Main Authors: Zhao, Fei, Zhu, Rong, Wang, Wen-rui
Format: Article
Language:English
Subjects:
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coherence
Combustion
Combustion temperature
Composites
Continuous casting
Corrosion and Coatings
Electric arc furnaces
Experimental methods
Fuels
Gases
Glass
High speed
High temperature
High temperature environments
Low turbulence
Materials Science
Metallic Materials
Methane
Natural Materials
Numerical methods
Oxygen
Radiation
Research methodology
Science
Simulation
Steel making
Supersonic combustion
Surfaces and Interfaces
Temperature
Thin Films
Tribology
Turbulence models
Velocity
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Summary:Based on a current coherent jet, this study proposes a supersonic combustion (SC) coherent jet in which the main oxygen jet is surrounded by a supersonic fuel gas. The characteristics of the proposed coherent jet are analyzed using experimental methods and numerical simulations in the high-temperature environment of electric arc furnace (EAF) steelmaking. The SC coherent jet achieved stable combustion in the EAF steel-making environment. The simulated combustion temperature of the supersonic shrouding methane gas was 2930 K, slightly below the theoretical combustion temperature of methane-oxygen gas. The high speed and temperature of the supersonic flame effectively weakened the interaction between the main oxygen jet and the external ambient gas, inhibiting the radial expansion of the main oxygen jet and maintaining its high speed and low turbulence over a long distance. These features improved the impact capacity of the coherent jet and strengthened the stirring intensity in the EAF bath.
ISSN:1674-4799
1869-103X
DOI:10.1007/s12613-019-1928-0