エキサイプレックス蛍光法による高温気流中の噴霧火炎の解析

坂下 直己, 天谷 賢児, 新井 雅隆

doi:10.1299/kikaib.67.2590

エキサイプレックス蛍光法による高温気流中の噴霧火炎の解析

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タイトル別名

Analysis of Spray Flame Structure in a Hot Air Stream by Exciplex Fluorescence Method.
エキサイプレックスケイコウホウニヨルコウオンキリュウチュウノフンムカエンノカイセキ

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説明

Fuel droplet and vapor distributions in a spray flame formed in the hot air stream were measured by an exciplex fluorescence method. Kerosene was used as a test fuel. Kerosene was miscible with a small quantity of exciplex-forming dopants, TMPD (N, N, N', N'-tetramethyl-1, 4-phenylene diamine) and naphthalene. A Nd : YAG laser (355nm) was used for excitation of the fuel. The fuel spray was injected from a swirl atomizer into an air stream. Air temperature was changed from room temperature to 1000k which was higher than the self-ignition temperature of a kerosene spray. Distributions of the fuel droplets and vapor were strongly affected by the air temperature. Furthermore it was confirmed that the fuel vapor was transported into recirculating flow area formed on the flame holder.