Improvement on the accuracy of the CGBOS technique and development of a novel reconstruction method

• Project/Area Number: 25420848
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Chiba University
• Principal Investigator: Ota Masanori 千葉大学, 工学(系)研究科(研究院), 准教授 (60436342)
• Co-Investigator(Kenkyū-buntansha): MAENO Kazuo 木更津工業高等専門学校, 校長 (30133606)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 航空宇宙工学 / 定量的密度計測 / ４次元計測 / ３次元計測

Outline of Final Research Achievements

A telecentric optical system is introduced to the background oriented schlieren (BOS) technique to improve the accuracy. The drawbacks of conventional diverging right observation can be overcome. The optical arrangement and formula for telecentric BOS measurement and measurement results obtained by the colored-grid background oriented schlieren (CGBOS) technique have been discussed. Furthermore, the simultaneous multi-angle measurement system have been built up to realize the CT measurement of the unsteady phenomena. A novel reconstruction algorithm has also been developed.

Research Products

• [Journal Article] Quantitative density measurement of the lateral jet / cross flow interaction field by colored-grid background oriented schlieren (CGBOS) technique (2015)
  • Author(s): M. Ota, K. Kurihara, K. Aki, Y. Miwa, T. Inage, K. Maeno
  • Journal Title: Journal of Visualization Volume: 18 Issue: 3 Pages: 543-552
  • DOI: 10.1007/s12650-015-0297-7
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Improvement in spatial resolution of background oriented schlieren technique by introducing a telecentric optical system and its application to supersonic flow (2015)
  • Author(s): Masanori Ota, Friedrich Leopold, Ryusuke Noda, Kazuo Maeno
  • Journal Title: Experiments in Fluids Volume: 56 Issue: 3 Pages: 1-10
  • DOI: 10.1007/s00348-015-1919-5
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Quantitative density measurement of the lateral jet / cross flow interaction field by colored-grid background oriented schlieren (CGBOS) technique (2015)
  • Author(s): M. Ota, K. Kurihara, K. Aki, Y. Miwa, T. Inage, K. Maeno
  • Journal Title: Jornal of Visualization Volume: 印刷中
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Simultaneous Multi angle measurement of unsteady flow by Colored-Grid Background Oriented Schlieren (CGBOS) Technique (2016)
  • Author(s): Masaori Ota, Ken Kurihara, Hiromichi Arimoto, Kiichi Shida, Friedrich Leopold, Daniel Klatt, Bastien Martinez
  • Organizer: The 17th International Symposium on Flow Visualization
  • Place of Presentation: Tennessee, USA
  • Year and Date: 2016-06-19
  • Int'l Joint Research
• [Presentation] 超音速流中における噴流発生に伴う非定常干渉場の可視化計測 (2016)
  • Author(s): 栗原健，伊藤拓海，稲毛達朗，太田匡則，前野一夫
  • Organizer: 平成27年度衝撃波シンポジウム
  • Place of Presentation: 熊本大学黒髪南地区
  • Year and Date: 2016-03-07
• [Presentation] 色格子背景設置型シュリーレン法による超音速流れと噴流の干渉場に対する４次元的密度計測 (2015)
  • Author(s): 栗原健，安芸恵太，有元啓倫，稲毛達朗，太田匡則，前野一夫
  • Organizer: 2015年度日本機械学会年次大会
  • Place of Presentation: 北海道大学工学部
  • Year and Date: 2015-09-13
• [Presentation] 12台のカメラを用いた多方向同時撮影系による非定常熱対流現象の３次元密度計測 (2015)
  • Author(s): 安芸恵太，栗原健，有元啓倫，太田匡則
  • Organizer: 2015年度日本機械学会年次大会
  • Place of Presentation: 北海道大学工学部
  • Year and Date: 2015-09-13
• [Presentation] Three-dimensional measurement of the lateral jet / cross flow interaction field by colored-grid background oriented schlieren (CGBOS) technique (2015)
  • Author(s): Masanori Ota, Ken Kurihara, Keita Aki, Yoshihiro Miwa, Tatsuro Inage, Kazuo Maeno
  • Organizer: The 30th International Symposium on Shock Waves
  • Place of Presentation: テルアビブ，イスラエル
  • Year and Date: 2015-07-09 – 2015-07-24
• [Presentation] 高速度カメラを用いたColored-Grid Background Oriented Schlieren (CGBOS)法による超音速流れと噴流の干渉場に対する４次元的密度計測 (2015)
  • Author(s): 栗原健，三輪善広，安芸恵太，浅井博行，有元啓倫，稲毛達朗，太田匡則，前野一夫
  • Organizer: 平成26年度衝撃波シンポジウム
  • Place of Presentation: 群馬県伊香保温泉 ホテル天坊
  • Year and Date: 2015-03-09 – 2015-03-11
• [Presentation] Background Oriented Schlieren (BOS)法による水中におけるレーザー誘起単一気泡生成時の衝撃波に対する定量計測 (2015)
  • Author(s): 太田匡則，浅井博行，有元啓倫，安芸恵太，栗原健，前野一夫
  • Organizer: 平成26年度衝撃波シンポジウム
  • Place of Presentation: 群馬県伊香保温泉 ホテル天坊
  • Year and Date: 2015-03-09 – 2015-03-11
• [Presentation] Colored-Grid Background Oriented Schlieren (CGBOS)法によるサイドジェットと主流の干渉場の定量的密度計測 (2014)
  • Author(s): 太田匡則，三輪善広，菊間悠介，安芸恵太，栗原健，稲毛達朗，前野一夫
  • Organizer: 平成25年度衝撃波シンポジウム
  • Place of Presentation: 青山学院大学相模原キャンパス
• [Presentation] Colored-Grid Background Oriented Schlieren (CGBOS)法によるサイドジェットと主流の干渉場に対する高速度カメラによる計測 (2014)
  • Author(s): 栗原健，三輪善広，菊間悠介，安芸恵太，稲毛達朗，太田匡則，前野一夫
  • Organizer: 平成25年度衝撃波シンポジウム
  • Place of Presentation: 青山学院大学相模原キャンパス
• [Presentation] Simultaneous Multi Angle Measurement of Natural Convection by Colored-Grid Background Oriented Schlieren (CGBOS) Technique (2014)
  • Author(s): M. Ota, K. Kurihara, K. Aki, K. Maeno
  • Organizer: 16th International Symposium on Flow Visualization
  • Place of Presentation: Okinawa Convention Center, Okinawa, Japan
• [Presentation] Quantitative Density Measurement of the Lateral Jet / Cross Flow Interaction Field by Colored-Grid Background Oriented Schlieren (CGBOS) Technique (2014)
  • Author(s): M. Ota, K. Kurihara, K. Aki, Y. Miwa, Y. Kikuma, T. Inage, K. Maeno
  • Organizer: 16th International Symposium on Flow Visualization
  • Place of Presentation: Okinawa Convention Center, Okinawa, Japan
• [Remarks] 千葉大学大学院工学研究科太田研究室ホームページ
  • URL: http://www.em.eng.chiba-u.jp/~supersonic/kenkyuunaiyou.html