Open AccessCombustion of round hydrogen microjet in a cocurrent air flow
Author(s) -
В. В. Козлов,
Г. Р. Грек,
М. М. Катасонов,
M. V. Litvinenko,
Yu. А. Litvinenko,
A. S. Tambovtsev,
А. Г. Шмаков
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1382/1/012056
Subject(s) - combustion , supersonic speed , coaxial , mechanics , hydrogen , materials science , diffusion flame , chemistry , physics , mechanical engineering , engineering , combustor , organic chemistry
Experimental data on combustion of a round hydrogen microjet in a cocurrent coaxial air jet are presented. As is found, the combustion of microjet is dominated by the generation of “bottleneck-flame region” that is in agreement with our previous observations on the diffusion combustion of subsonic hydrogen microjets. Transformation of the spherical “bottleneck-flame region” to a cylindrical one is observed. At supersonic combustion of the round hydrogen microjet, supersonic cells are generated both in the microjet and in the cocurrent coaxial air flow. A feature of the combustion process is the flame lift-off from the nozzle exit.