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KAKEN_24656144seika.pdf
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イオン群気流の時空間微細構造解明に特化したハイブリッド熱流動イメージング法の開発
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イオングン キリュウ ノ ジクウカン ビサイ コウゾウ カイメイ ニ トッカシタ ハイブリッド ネツ リュウドウ イメージングホウ ノ カイハツ
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Iongun kiryu no jikukan bisai kozo kaimei ni tokkashita haiburiddo netsu ryudo imejinguho no kaihatsu
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Development of hybrid imaging technique for thermofluid dynamics for investigations of spatiotemporal fine structure in ion gas flow
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佐藤, 洋平
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サトウ, ヨウヘイ
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Sato, Yohei
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慶應義塾大学・理工学部・教授
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Research team head
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科研費研究者番号 : 00344127
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2015
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科学研究費補助金研究成果報告書
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2014
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気流中マイナスイオン群の時空間微細構造解明に向けて, コヒーレント・アンチストークスラマン散乱(CARS)光による混合気流の非侵襲センシング法の開発を行った。気体として二酸化炭素および窒素を選定し, 混合比変化に伴うそれぞれのCARS光強度は理論に基づいた二次曲線を示していることが明らかとなった。チャネル内気流混合過程の濃度分布非侵襲センシングを行い, チャネル下流域では, 二酸化炭素および窒素の混合比変化を的確にとらえることが可能となり, 理論との整合性を確認した。マイクロ・ガスデバイス内に蛍光プローブを混入することなく, 非侵襲にて速度, 温度や濃度分布を計測することが可能となった。
This research work focused on the development of non-intrusive sensing technique using coherent anti-Stokes Raman scattering (CARS) in order to investigate spatiotemporal fine structure of ion gas flow in micro gas device. Carbon dioxide and nitrogen were selected as gas phase. It was observed that the relationship between CARS intensity from each gas and mixture ratio had a form similar to quadratic function, which is consistent with the CARS theory. Measurements of mixture ratio in channel flow were performed at ten measurement points. The present sensing technique has an ability to measure a change in mixture ratio in the downstream region, which was confirmed by the theoretical mixing process. It can be concluded that non-intrusive measurement of gas concentration in micro device was achieved by Raman scattering, which means that fluorescent particles and dye are no longer required.
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研究種目 : 挑戦的萌芽研究
研究期間 : 2012~2014
課題番号 : 24656144
研究分野 : ナノ・マイクロ熱流体工学
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