JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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Other TitleStudy of flow structures around vehicle traveling at supersonic/hypersonic speeds
Author(jpn)中村 弘明; 真鍋 圭司; 瀬崎 新士; 西尾 正富
Author(eng)Nakamura, Hiroaki; Manabe, Keiji; Sezaki, Shinji; Nishio, Masatomi
Author Affiliation(jpn)福山大学 大学院; 福山大学 工学部; 福山大学 大学院; 福山大学 工学部
Author Affiliation(eng)Fukuyama University Graduate School; Fukuyama University Faculty of Engineering; Fukuyama University Graduate School; Fukuyama University Faculty of Engineering
Issue Date2004-05
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
Publication title宇宙航行の力学シンポジウム 平成15年度
Symposium on Flight Mechanics and Astrodynamics 2003
Start page47
End page50
Publication date2004-05
AbstractFlow structures around a hypersonic re-entry Mars Environmental Survey (MESUR) capsule traveling at supersonic/hypersonic speeds are investigated utilizing a new computational method based on the finite element method (FEM). In order to confirm the validity of the computational method the results are compared with experimental ones obtained by the electrical discharge method for hypersonic flow at Mach 10. From these results, it can be concluded that they were in good agreement. As an example of the numerical simulation, flowfields around the capsule traveling at a speed of Mach 5, 3, and 2, respectively, are investigated. By these simulations, differences of the flow structures for various Mach numbers are clarified. The result shows that the location of the separation behind the capsule is governed by the strength of the reverse pressure gradient. The reverse flow behind the capsule that determines the value of the base pressure distribution is correlated to the strength of the re-circulation region and the stability of the capsule.
Keywordsflow characteristic; supersonic flight; hypersonic flight; wake structure; CFD; finite element method; flow visualization; laser induced fluorescence; 流れの特性; 超音速飛行; 極超音速飛行; 後流構造; CFD; 有限要素法; 流れの可視化; レーザー誘起蛍光法
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会

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