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  • Summary & Details

Infrared High-Speed Thermography of Combustion Chamber Wall Impinged by Diesel Spray Flame Effects of Wall Surface Roughness on Heat Transfer

赤外高速度サーモグラフィを用いたディーゼル噴霧火炎衝突による壁面熱伝達現象の調査 壁面粗さが壁面熱伝達に与える影響

Detailed Information

Author(J)1) 髙橋 起輝, 2) 宮川 雄成, 3) 木下 浩行, 4) 田中 庸平, 5) 茂木 将一, 6) 相澤 哲哉
Author(E)1) Tatsuki Takahashi, 2) Yuusei Miyagawa, 3) Hiroyuki Kinoshita, 4) Yohei Tanaka, 5) Shoichi Motegi, 6) Tetsuya Aizawa
Affiliation(J)1) 明治大学大学院, 2) 明治大学大学院, 3) 明治大学大学院, 4) 明治大学大学院, 5) 明治大学, 6) 明治大学
Affiliation(E)1) Meiji University, 2) Meiji University, 3) Meiji University, 4) Meiji University, 5) Meiji University, 6) Meiji University
Abstract(J)壁面粗さがディーゼル火炎衝突壁面における熱伝達に与える影響を調べるため、粗さの異なる石英摺りガラス壁面上にクロム放射膜を蒸着し、放射膜裏面からの赤外放射を赤外高速度カメラで撮影した。その結果、赤外放射強度は光学研磨面に比べ、粗い壁面のほうが3~4倍明るく、最大値を示した後の減衰が速いことがわかった。

Translation

Abstract(E)In order to investigate effects of wall roughness on the heat transfer of wall impinged by diesel spray flame, chromium-coated quartz windows with different surface roughness were prepared and infrared radiation from the back surface of the coating was imaged by a high-speed infrared camera. The experimental results showed that the rough surfaces exhibited 3 to 4 times higher radiation intensity compared to the one for an optical polished surface and faster decay of radiation after exhibiting a peak.

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