Investigations for Flow Around slender bodies at high angles of attack

高迎角细长物体周围流动的研究

• 批准号: 60460074
• 负责人: KUBOTA Hirotoshi
• 金额: $ 4.29万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60460074/
• 关键词: Slender body; Flow around high-angle-of-attack body; Vortex; Separated flow; Wind tunnel testing; Flow visualization; Navier-Stokes equation; ナヴィエ・ストークス方程式; 数値シミュレーション

Investigations for flow around the slender bodies at high angles of attack and the related aerodynamic characteristics are carried out with the use of both the flow visualization/force measurements in the low speed wind tunnel and the numerical simulation.The major conclusions are as follows:1. Flow around the axisymmetric bodies shows the asymmetries at angles of attack of 60-75 deg and it causes the asymmetric side force.2. The empirical law that "the nonlinear aerodynamic characteristics appears at angle of attack as approximately twice as cone angle of body" which is effective to axisymmetric body can be also applied to the non-axisymmetric bodies.3. When the foreplane is attached on the slender body, it somewhat alleviates the occurrence of asymmetric side force and demonstrates the possibility of application to lateral control of space transportation system.4. Flow structure and aerodynamic characteristics can be simulated in some extent with the Navier-Stokes analysis. The structures of the three-dimensional separated flow (nodes, foci, saddles, etc.) can be numerically obtained based on the computational results of Navier-Stokes equations.

利用低速风洞中流动可视化/力测量和数值模拟的方法，对高迎角细长体周围的流动及其气动特性进行了研究。主要结论如下： 1．轴对称体周围的流动在60-75°攻角处表现出不对称性，导致侧向力不对称。 2．对轴对称体有效的“非线性气动特性出现在大约两倍于体锥角的攻角处”的经验定律也适用于非轴对称体。 3．当前翼安装在细长机身上时，在一定程度上缓解了不对称侧向力的产生，展示了应用于空间运输系统侧向控制的可能性。 4．纳维-斯托克斯分析可以在一定程度上模拟流动结构和气动特性。根据纳维-斯托克斯方程的计算结果，可以数值化地得到三维分离流的结构（节点、焦点、鞍座等）。

项目成果

Kubota, H., Matsuzaka, M., Watanuki, T. and Suzuki, K.: "Experimental Investigation of Separated Flow Around High-Angle-of-Attack Slender Bodies" Proc. of 15th International Symposium on Space Technology and Science, Tokyo. 593-598 (1986)

Kubota, H.、Matsuzaka, M.、Watanuki, T. 和 Suzuki, K.：“高攻角细长体周围分离流的实验研究”Proc。

加茂圭介,久保田弘敏,姫野龍太郎,桑原邦郎: AIAA(アメリカ航空宇宙学会)Paper 86-1778-CP. 86-96 (1986)

Keisuke Kamo、Hirotoshi Kubota、Ryutaro Himeno、Kunio Kuwabara：AIAA（美国航空航天学会）论文 86-1778-CP（1986）。

Kamo, K., Kubota, H., Himeno, R. and Kuwahara, K.: "Computational Simulation of the Flow around a Rocket Body at High Angle of Attack" AIAA Paper 86-1778-CP. 86-96 (1986)

Kamo, K.、Kubota, H.、Himeno, R. 和 Kuwahara, K.：“高迎角火箭体周围流动的计算模拟”AIAA 论文 86-1778-CP。

久保田弘敏,松坂正芳,綿貫忠晴,鈴木宏二郎: 15th International Symposium on Space Technology and Science(第15回国際宇宙技術と科学のシンポジウム)論文集. 593-598 (1986)

Hirotoshi Kubota、Masayoshi Matsuzaka、Tadaharu Watanuki、Kojiro Suzuki：第 15 届国际空间技术与科学研讨会论文集 593-598（1986 年）。

鈴木宏二郎,松坂正芳,綿貫忠晴,井戸田典彦,久保田弘敏: International Conference on Fluid Mechanics,Beijing(北京国際流体力学会議)論文集. (1987)

Kojiro Suzuki、Masayoshi Matsuzaka、Tadaharu Watanuki、Norihiko Idoda、Hirotoshi Kubota：国际流体力学会议论文集，北京（1987）。