Non-steady characteristics of dispersion and ignitability for high-pressurized hydrogen jet discharged from a pinhole
作者： K. Okabayashi , K. Tagashira , K. Kawazoe , K. Takeno , M. Asahara
DOI: 10.1016/J.IJHYDENE.2018.05.047
关键词: Water vapor 、 Nozzle 、 Jet (fluid) 、 Particle image velocimetry 、 Flame ionization detector 、 Analytical chemistry 、 Electric spark 、 Materials science 、 Ignition system 、 Hydrogen
摘要: Abstract Hydrogen gas concentrations and jet velocities were measured downstream by a high response speed flame ionization detector PIV (Particle Image Velocimetry) in order to investigate the characteristics of dispersion ignitability for 40–82 MPa high-pressurized hydrogen discharged from nozzle with 0.2 mm diameter. The light emitted both OH radical water vapor species yielded combustion, ignited an electric spark, recorded two cameras. From results, empirical formula concerning relationships time-averaged concentrations, concentration fluctuations ignition probability obtained suggest that they would be independent discharge pressure.
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