Study of Separated flow over bodies at high incidence with towing in air-filed chamber

• Project/Area Number: 20560734
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Chiba University
• Principal Investigator: NISHIKAWA Nobuhide Chiba University, 大学院・工学研究科, 教授 (80009753)
• Co-Investigator(Kenkyū-buntansha): MIKAMI Fumihoko 千葉大学, 大学院・工学研究科, 准教授 (40272348)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2010: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 剥離線 / 伴流渦 / ナヴィエストークス方程式 / 数値解析

Research Abstract

Experiments were made in an air chamber using a towing paraboloidal-nose or hemi-sphere nose model at high angles of attack. PIV recordings were obtained in planes both perpendicular to and parallel to the body axis to study detailed structure of the vortices in the cross-sections. It was confirmed by the PIV study that equally spaced vortex tubes forming vortex loops around the main vortex, and the corresponding structure was found by flow visualization using titaniumtetrachloride (TiCl4).

Research Products

• [Journal Article] Observation of the instability in the shear layer behind aparaboloidal-nose cylinder Journal of Physics (2010)
  • Author(s): Fumihiko Mikami, Ryohei Toyota, Nobuhide Nishikawa
  • Journal Title: Conference Series 216 Pages: 1213-1213
  • Peer Reviewed
• [Journal Article] Observation of the instability in the shear layer behind a paraboloidal-nose cylinder (2010)
  • Author(s): F.Mikami, R.Toyota, N.Nishikawa
  • Journal Title: Journal of Physics : Conference Series (印刷中)
  • Peer Reviewed
• [Presentation] ある渦の素性について (2011)
  • Author(s): 西川進栄
  • Organizer: シンポジウム航空宇宙工学における空気力学あ挑戦2011
  • Place of Presentation: 鬼怒川ホテル 招待講演
  • Year and Date: 2011-01-22
• [Presentation] ある渦の素性についてシンポジウム航空宇宙工学における空気力学の挑戦 (2011)
  • Author(s): 西川進栄
  • Organizer: 講演論文集,pp4-8(特別講演)
• [Presentation] PIV Study of Sub-vortices behind Blunt-nose Cylinder (2010)
  • Author(s): N.NISHIKAWA, F.MIKAMI, R.TOYOTA
  • Organizer: 8th Euromech Fluid Mechanics Conference
  • Place of Presentation: ドイツ
  • Year and Date: 2010-09-15
• [Presentation] 軸対称放物体後流における渦ループ群のPIV計測 (2010)
  • Author(s): 三神史彦, 中野宏志, 西川進栄
  • Organizer: 日本航空宇宙学会 第41期年会講演会
  • Place of Presentation: 東京大学本郷キャンパス
  • Year and Date: 2010-04-15
• [Presentation] 軸対称放物体後流における渦ループ群のPIV計測日本航空宇宙学会 (2010)
  • Author(s): 三神史彦, 中野宏志, 西川進栄
  • Organizer: 第41期年会講演会講演集pp.361-362(JSASS-2010-1062)
• [Presentation] PIV Study of Sub-vortices behind Blunt-nose Cylinder Abstracts in 8th Euromech Fluid Mechanics Conference, ,pp S16-7 (2010)
  • Author(s): Nobuhide Nishikawa, Fumihiko Mikami, Ryohei Toyota
• [Presentation] Smoke Visualization and Data Analysis of Hot Wire Measurements in Separated Vortices over an Axisymmetric Paraboloid at High Angles of Attack 27^<th> International Congress of the Aeronautical Sciences (2010)
  • Author(s): Tadateru ISHIDE, Nobuhide NISHIKAWA
  • Place of Presentation: (CD-ROM Proc. ICAS2010-P2.17 pp. 1-9)
• [Presentation] 曳航実験による軸対称放物体後流における渦ループ群の解析 (2009)
  • Author(s): 三神史彦、中野宏志、西川進栄
  • Organizer: 第47回飛行シンポジウム
  • Place of Presentation: 岐阜(アブストラクト集p17)
  • Year and Date: 2009-11-04
• [Presentation] Study of Sub-vortices and Statistical values in Vortical Flows behind a Paraboloidal-nose Cylinder (2009)
  • Author(s): R.Toyota, 三神史彦, T.Ishide, N.Nishikawa
  • Organizer: Sixth International Sympo. Turbulence, Heat, Mass transfer
  • Place of Presentation: Italy(Proc., pp513-516 ; Begel House)
  • Year and Date: 2009-09-13
• [Presentation] Observation of the instability in the shear layer behind aparaboloidal-nose cylinder Third Interna- tional Sympo. (2009)
  • Author(s): Fumihiko Mikami, Ryohei. Toyota, Nobuhide Nishikawa
  • Organizer: on Bifurcations and Instabilities in Fluid Dynamics, Abstracts, p.21
• [Presentation] Study of Sub-vortices and Statistical values in VorticalFlows behind a Paraboloidal-nose Cylinder Sixth International Sympo. (2009)
  • Author(s): Ryohei. Toyota, Fumihiko Mikami, Tadateru Ishide, 西川進栄
  • Organizer: Turbulence, Heat, Mass transfer, Proceedings., pp513-516;
  • Place of Presentation: Hegel House.
• [Presentation] 傾斜角を有する平板後流に形成される渦構造の可視化画像計測 (2008)
  • Author(s): 鈴木貴士、三神史彦、西川進栄
  • Organizer: 第46回飛行機シンポジウム
  • Place of Presentation: 東京
  • Year and Date: 2008-10-22
• [Presentation] Numerical Simulation of Flow Around Rotating Disk With Mixing Of Injected Component (2008)
  • Author(s): N. Nishikawa, and F. Mikami
  • Organizer: International Conference of Numerical Anal ysis and Applied Mathematics 2008
  • Place of Presentation: Greece
  • Year and Date: 2008-09-17