Experimental Study on Radiative Ignition of Filter Paper with Near Infrared Radiation Under Microgravity

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概要

• 論文の詳細を見る

• Experiments with radiative ignition were performed in microgravity to elucidate the events arising during the ignition process in a quiescent field. Filter paper was irradiated by Diode laser light (800.1 nm), which is little absorbed in the gas phase, at various oxygen concentrations (0-50%). The ignition delay was measured for various experimental conditions. The density changes of the gas phase before ignition was observed in detail by a Mach-Zehnder interferometer. The results showed that heat conduction from the sample surface induced a weak chemical reaction in the vicinity of the sample surface, and this propagated outward to achieve combustion. The ignition delay decreased with increases in O_2 concentration because the mixture near the sample surface contained more oxygen causing an immediate transition from the weak chemical reactions to the strong reactions of the combustion.

• 一般社団法人日本機械学会の論文
• 2003-11-15

著者

• FUJITA Osamu

  Division of Mechanical Science, Graduate School of Engineering, Hokkaido University

• Takahashi Junya

  Division Of Mechanical Science Hokkaido University

• ITO Kenichi

  Hokkaido University

• Fujita Osamu

  Division Of Mechanical And Space Engineering Hokkaido University

• Fujita Osamu

  Division Of Mechanical Science Hokkaido University

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