| 研究課題/領域番号 |
20K22382
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| 研究種目 |
研究活動スタート支援
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| 配分区分 | 基金 |
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| 審査区分 |
0301:材料力学、生産工学、設計工学、流体工学、熱工学、機械力学、ロボティクス、航空宇宙工学、船舶海洋工学およびその関連分野
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| 研究機関 | 東北大学 |
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研究代表者 |
Dubey Ajit.Kumar 東北大学, 数理科学連携研究センター, 助教 (40872338)
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| 研究期間 (年度) |
2020-09-11 – 2022-03-31
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| 研究課題ステータス |
中途終了 (2021年度)
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| 配分額 *注記 |
2,860千円 (直接経費: 2,200千円、間接経費: 660千円)
2021年度: 1,430千円 (直接経費: 1,100千円、間接経費: 330千円)
2020年度: 1,430千円 (直接経費: 1,100千円、間接経費: 330千円)
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| キーワード | Combustion instability / Detonation / Thermoacoustics / Flame acoustic coupling / Knocking / DNS / Autoignition / Sper-Knock / Numerical Simulation |
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| 研究開始時の研究の概要 |
Interaction of flame in an enclosure with self-generated acoustic field leads to thermoacoustic instability with disastrous consequences for engines. For complete understanding, I propose to create benchmark experiments with
geometries optimized for DNS study to create new solution methodologies.
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| 研究実績の概要 |
This project aimed to understand practical flame-acoustics interactions through optimised experiments and high fidelity numerical simulations. Substantial progress was achieved during the course of project. Experiments in small scale half-open tubes were performed as a benchmark to understand flame acoustic interactions in this acoustic condition. Such experiments were not available in the literature. Effect of ignition energy was also found. DNS of this experiment is under progress.
2D-DNS was performed for a range of thermodynamic conditions expected in modern IC engines. New modes of autoignition were found. This is very useful to understand the super-knock phenomenon in the IC engines. Results were presented in national/international conferences and several journals are under progress.
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