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Effects of Reynolds Number and Ramp Angle on Görtler Vortices over a Compression Ramp
http://hdl.handle.net/10228/0002001211
http://hdl.handle.net/10228/0002001211510111ae-0336-4431-9e2c-7eed9c6581b0
| 名前 / ファイル | ライセンス | アクション |
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10443953.pdf (3.8 MB)
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| アイテムタイプ | 共通アイテムタイプ(1) | |||||||||||||||
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| 公開日 | 2025-02-03 | |||||||||||||||
| タイトル | ||||||||||||||||
| タイトル | Effects of Reynolds Number and Ramp Angle on Görtler Vortices over a Compression Ramp | |||||||||||||||
| 言語 | en | |||||||||||||||
| その他のタイトル | ||||||||||||||||
| その他のタイトル | Effects of Reynolds Number and Ramp Angle on Gortler Vortices over a Compression Ramp | |||||||||||||||
| 言語 | en | |||||||||||||||
| 著者 |
Kalash Dixit,
× Kalash Dixit,
× Kumar, Ritu Raj
× Vadlamani, Nagabhushana Rao
× 坪井, 伸幸
WEKO
14118
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| 抄録 | ||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||
| 内容記述 | We investigate the supersonic flow over a compression corner using Large-eddy simulations (LES) with the objective of capturing Görtler vortices and their associated effects over the ramp. Simulations are carried out at a freestream Mach number, M∞ = 4, and a reference Reynolds number of 1.16 × 105. The formation of these Görtler vortices is sensitive to the Reynolds number and ramp angles, which once formed can potentially impact the transition and wall heating rate distribution. Two ramp angles of 15◦ and 18◦ and three different positions of the ramp corner (P1-P3) are considered in this study. Our results show that the strength of the Görtler vortices increases with an increase in both the ramp angle and the position of the ramp corner. This is observed to promote early transition due to primary centrifugal instability and secondary instabilities. For the extreme test case of 18◦-P3, the peak value of the Stanton number is found to be ≈ 26% higher than the time and span-averaged value, indicating that the effect of downwash on the wall heating rate distribution is significant. | |||||||||||||||
| 言語 | en | |||||||||||||||
| 備考 | ||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||
| 内容記述 | The 34th International Symposium on Shock Waves, ISSW34, July 16 - 21, 2023, Daegu, Korea | |||||||||||||||
| 言語 | en | |||||||||||||||
| 書誌情報 |
発行日 2023-07 |
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| 言語 | eng | |||||||||||||||
| 資源タイプ | ||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||||||||||||
| 資源タイプ | conference paper | |||||||||||||||
| 出版タイプ | ||||||||||||||||
| 出版タイプ | AM | |||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||||||
| 会議記述 | ||||||||||||||||
| 会議名 | The 34th International Symposium on Shock Waves, ISSW34 | |||||||||||||||
| 回次 | 34 | |||||||||||||||
| 開始年 | 2023 | |||||||||||||||
| 開始月 | 07 | |||||||||||||||
| 開始日 | 16 | |||||||||||||||
| 終了年 | 2023 | |||||||||||||||
| 終了月 | 07 | |||||||||||||||
| 終了日 | 21 | |||||||||||||||
| 開催国 | KOR | |||||||||||||||
| 査読の有無 | ||||||||||||||||
| 値 | yes | |||||||||||||||
| 研究者情報 | ||||||||||||||||
| URL | https://hyokadb02.jimu.kyutech.ac.jp/html/20_ja.html | |||||||||||||||
| 論文ID（連携） | ||||||||||||||||
| 値 | 10443953 | |||||||||||||||
| 連携ID | ||||||||||||||||
| 値 | 12656 | |||||||||||||||
