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Effect of an External Electric Field on the Disperse Composition of Condensed Products of Aluminum Particle Combustion in Air

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Combustion, Explosion and Shock Waves Aims and scope

Abstract

Investigation was performed of the effect of an external electric field on the completeness of combustion of ASD-1 aluminum powder in an airflow and on the disperse composition of condensed combustion products. It is established that for an oxidizer-to-fuel ratio of 0.8 and a combustor inlet flow rate of 10 m/sec, the application of an electric field increases the completeness of aluminum combustion from 43 to 75%. In this case, the sizes of submicron particles of aluminum oxide practically do not change, and the mass average sizes and the mass concentration of the 4 – 50 μm fraction decrease, due to the activating effect of the electric field on the vapor-phase combustion of aluminum particles. A decrease of the mass concentration of the size fraction larger than 50 μm from 12 to 3% under the action of the electric field suppress markedly the agglomeration of aluminum particles during combustion in air. Key words: aluminum, turbulent combustion, electric field, disperse composition of condensed products of combustion.

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Authors and Affiliations

  1. Bauman Moscow State Technical University, Moscow, 107005

    D. A. Yagodnikov

  2. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432

    E. I. Gusachenko

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  1. D. A. Yagodnikov
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  2. E. I. Gusachenko
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Yagodnikov, D.A., Gusachenko, E.I. Effect of an External Electric Field on the Disperse Composition of Condensed Products of Aluminum Particle Combustion in Air. Combustion, Explosion, and Shock Waves 38, 449–455 (2002). https://doi.org/10.1023/A:1016215416889

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