| Item type |
会議発表論文 / Conference Paper(1) |
| 公開日 |
2021-02-08 |
| タイトル |
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タイトル |
Side-Wall Effects on the Global Stability of Swept and Unswept Supercritical Wings at Buffet Conditions |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_5794 |
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資源タイプ |
conference paper |
| 著者 |
SANSICA, Andrea
橋本, 敦
小池, 俊輔
河内, 俊憲
SANSICA, Andrea
HASHIMOTO, Atsushi
KOIKE, Shunsuke
KOCHI, Toshinori
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| 著者所属 |
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宇宙航空研究開発機構(JAXA) |
| 著者所属 |
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宇宙航空研究開発機構(JAXA) |
| 著者所属 |
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宇宙航空研究開発機構(JAXA) |
| 著者所属 |
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岡山大学 |
| 著者所属（英） |
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en |
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Japan Aerospace Exploration Agency (JAXA) |
| 著者所属（英） |
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en |
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Japan Aerospace Exploration Agency (JAXA) |
| 著者所属（英） |
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en |
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Japan Aerospace Exploration Agency (JAXA) |
| 著者所属（英） |
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en |
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Okayama University |
| 出版者 |
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出版者 |
宇宙航空研究開発機構(JAXA) |
| 出版者（英） |
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出版者 |
Japan Aerospace Exploration Agency (JAXA) |
| 書誌情報 |
宇宙航空研究開発機構特別資料: 流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2020オンライン論文集
en : JAXA Special Publication: Proceedings of Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2020 Online
巻 JAXA-SP-20-008,
p. 109-118,
発行日 2021-02-08
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| 会議概要（会議名, 開催地, 会期, 主催者等） |
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内容記述タイプ |
Other |
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内容記述 |
流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2020オンライン (2020年9月28日-30日. 日本航空宇宙学会 : 宇宙航空研究開発機構(JAXA)オンライン会議) |
| 会議概要（会議名, 開催地, 会期, 主催者等）（英） |
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内容記述タイプ |
Other |
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内容記述 |
Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2020 Online (September 28-30, 2020. The Japan Society for Aeronautical and Space Sciences : Japan Aerospace Exploration Agency (JAXA), Online meeting) |
| 抄録（英） |
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内容記述タイプ |
Other |
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内容記述 |
A fully three-dimensional (3D) RANS-based global stability analysis is performed on wings in the presence of side-walls to study the complex interaction between buffet shock-oscillations, buffet cells and corner separations. A validation of both the nonlinear and linear stability analysis solvers is given for a two-dimensional (2D) incompressible laminar cylinder and for turbulent transonic buffet on a 2D OAT15A airfoil. The numerical setup is based on the experiments conducted at JAXA 0.8 m × 0.45 m high Reynolds number transonic wind tunnel on a 2D Common Research Model (CRM) profile. The CRM profile is extruded in the spanwise direction and flash mounted on lateral walls at its extremities. An unswept and a swept configuration at sweep angle of 10 deg are considered. The effect of the angle of attack (AoA) is studied for both configurations by selecting AoA = 4 and 7 deg. The RANS solutions are compared against the experimental oil-flow visualizations. Despite some differences in terms of size of the corner separation and shock locations, the main flow features are captured. For the unswept case, the results show that the separation in the middle wing section and corners increases with the AoA. Since the flow slows down near the side-walls, the shock is weakened and moves upstream towards the leading edge. When a sweep angle is applied, the flow is distorted by a crossflow velocity component that causes the corner separations to increase or decrease depending on the boundary-layer thickness of the secondary flow created in the wing spanwise direction. Linear global stability calculations carried out on the unswept wing at the lowest AoA show the presence of a 2D oscillatory mode at St approx. = 0.06 that is spatially localized on the shock. Another unstable mode at higher frequencies (St approx. = 0.1) is located near the corner separations and perturbation packets travel downstream along the shear-layer. For the highest AoA, the 2D mode no longer exists and two 3D modes at higher frequencies appear (St approx. = 0.07 and St approx. = 0.2). These modes are organized in spanwise perturbation wavepackets generated from the corner separation and convected downstream towards the wing middle section. In the separated region in the wing mid-section, the perturbations travel upstream from the trailing-edge towards the shock. Future investigations will focus on the effect of the sweep angle and detection of buffet cells. |
| 内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
形態: カラー図版あり |
| 内容記述（英） |
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内容記述タイプ |
Other |
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内容記述 |
Physical characteristics: Original contains color illustrations |
| ISSNONLINE |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2433-2232 |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 資料番号 |
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内容記述タイプ |
Other |
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内容記述 |
資料番号: AA2030013015 |
| レポート番号 |
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内容記述タイプ |
Other |
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内容記述 |
レポート番号: JAXA-SP-20-008 |
AA2030013015.pdf (12.7 MB)
