2023 Fiscal Year Final Research Report
Shock Wave Detection and 64 Times Resolution Flow Simulation based on Image-Processing/Fluid-Dynamics
| Project/Area Number |
19K04834
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 24010:Aerospace engineering-related
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| Research Institution | Yokohama National University |
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Principal Investigator |
Kitamura Keiichi 横浜国立大学, 大学院工学研究院, 准教授 (20402547)
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| Project Period (FY) |
2019-04-01 – 2024-03-31
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| Keywords | 衝撃波 / 画像処理 / 画像認識 / 圧縮性流体力学 / 数値流体力学 |
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| Outline of Final Research Achievements |
A new method for detecting shockwaves has been developed, named "CEDRIC (Canny-Edge-Detection / Rankine-hugonIot-Conditions unified shock sensor)." This method successfully captured the shockwave continuously with much smaller errors compared with the existing method.
Then, it was combined with our base flux function "SLAU2," resulting in "C-SLAU2." Although "C-SLAU2" did not show a significant improvement over "SLAU2" against anomalous solutions at shockwaves, it offered a deeper insight into further algorithm developments in the future. We also tried to extend "SLAU2" to multiphase flows and MHD (Magnetohydrodynamics) with success.
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| Free Research Field |
流体力学，数値流体力学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究により，衝撃波の滑らかかつ誤差の少ない自動検知に成功した．自動で衝撃波位置を正確に検知できれば人間では探せない衝撃波も精度良く発見できる．また非専門家や初心者も安心して衝撃波を特定できる．また，これにより「真に衝撃波でのみ安定」に計算できれば，それ以外の場所では高い精度を保ち，起きている流体現象をより良く解像できる．
これらは超新星爆発や太陽内部流れなど宇宙物理の解明，新しい航空宇宙機の設計，結石治療など理・工・医学の様々な分野に貢献する．
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