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Other TitleNumerical Analysis of Hysteresis in Mode Transition of Centerline Mach Reflection in Stunted Busemann Intakes for Axisymmetric Scramjet Engines
Author(jpn)小川, 秀朗; モルダー, サンヌ
Author(eng)Ogawa, Hideaki; Molder, Sannu
Author Affiliation(jpn)ロイヤルメルボルン工科大学; Ryerson大学
Author Affiliation(eng)Royal Melbourne Institute of Technology; Ryerson University
Issue Date2014-03-31
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構特別資料: 第45回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2013論文集
JAXA Special Publication
Start page145
End page150
Publication date2014-03-31
AbstractHypersonic air-breathing propulsion, in particular, scramjet (supersonic combustion ramjet) engines, is a promising technology for efficient and economical access-to-space and atmospheric transport. Axisymmetric air intakes based on the Busemann geometry offer appreciable efficiency with maximum total pressure recovery and minimum shock loss, but the inherently long geometry incurs large skin friction drag and structural weight, requiring shortening by some means. Two distinctly different configurations of Mach reflection are found to exist at the centerline for identical inflow conditions and intake lengths in the course of shortening by axial contraction (stunting). Parametric studies with steady and transient numerical simulations are performed to examine the inviscid transient flowfields with variations in the shortening length and freestream Mach number. This paper presents the results and flowfields with focus on the variations of the exit Mach number and temperature as well as intake drag and discusses the hysteresis observed in the stunting and reverse (stretching) process of the Busemann intakes.
Description会議情報: 第45回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2013 (2013年7月4日-5日. タワーホール船堀), 東京
形態: カラー図版あり
Meeting Information: 45th Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2013 (July 4-5, 2013. Tower Hall Funabori), Tokyo, Japan
Physical characteristics: Original contains color illustrations
Document TypeConference Paper
JAXA Category特別資料
NASA Subject CategoryAircraft Propulsion and Power
Report NoJAXA-SP-13-011

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