Development of tomographic rainbow schlieren for density fields in three-dimensional supersonic jets

• Project/Area Number: 15K05804
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Fluid engineering
• Research Institution: The University of Kitakyushu
• Principal Investigator: Miyazato Yoshiaki 北九州市立大学, 国際環境工学部, 教授 (30253537)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: シュリーレン法 / 密度計測 / CT / 衝撃波 / 超音速流れ / 流れの可視化 / 超音速噴流 / レインボーシュリーレン / 流れの定量的可視化 / レインボーシュリーレン法 / トモグラフィ

Outline of Final Research Achievements

Rainbow schlieren deflectometry combined with the computed tomography have been applied for shock-containing free jets issued from supersonic nozzles with a design Mach number of 1.5 to obtain three-dimensional density fields in the jets with high spatial resolution and accuracy. Two types of nozzle configurations were tried in the present experiment: One is an axisymmetric supersonic nozzle in which the nozzle has 1 mm diameter or 10 mm diameter at the exit. The other is a square supersonic nozzle in which the nozzle has a cross-sectional area of 1 mm x 1mm or 10 mm x 10 mm at the nozzle exit. Experiments have been performed for nozzle pressure ratios to produce shock-containing free jets. Also, jet density fields were soloved using the vortex sheet theory and the RANS equations. As a result, it is shown that the rainbow schlieren deflectometry is a useful tool for studying the three-dimensional structure of shock containing free jets.

Research Products

• [Journal Article] Optical Measurements of Shock Waves in Critical Nozzles at Low Reynolds Numbers (2017)
  • Author(s): Yagi,S., Inoue,S., Nakao,S., Ono,D., and Miyazato,Y.
  • Journal Title: Journal of Flow Control, Measurements & Visualization Volume: 5 Issue: 02 Pages: 36-50
  • DOI: 10.4236/jfcmv.2017.52003
  • Peer Reviewed / Open Access
• [Journal Article] Three-Dimensional Rainbow Schlieren Measurements in Underexpanded Sonic Jets from Axisymmetric Convergent Nozzles (2016)
  • Author(s): Takano, H., Kamikihara, D., Ono, D., Nakao, S., Yamamoto, H., and Miyazato, Y.
  • Journal Title: Journal of Thermal Science Volume: 25 Issue: 1 Pages: 78-83
  • DOI: 10.1007/s11630-016-0836-0
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] CFD Simulations of shock containing free jets from square supersonic nozzles (2017)
  • Author(s): MAEDA Shinnosuke, KUBO Kazunori, NAKAO Shinichiro, ONO Daisuke, and MIYAZATO Yoshiaki
  • Organizer: 13th International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows
  • Int'l Joint Research
• [Presentation] Study of free jets from axisymmetric supersonic micro nozzles (Part 1, Quantitative flow visualization) (2017)
  • Author(s): FUKUDA Hikaru, NAKAO Shinichiro, MIYAZATO Yoshiaki, and ISHINO Yojiro
  • Organizer: 14th International Conference on Flow Dynamics
  • Int'l Joint Research
• [Presentation] Study of free jets from axisymmetric supersonic micro nozzles (Part 2, RANS simulation) (2017)
  • Author(s): FUKUDA Hikaru, NAKAO Shinichiro, MIYAZATO Yoshiaki, and ISHINO Yojiro
  • Organizer: 14th International Conference on Flow Dynamics
  • Int'l Joint Research
• [Presentation] Rainbow schlieren measurements in underexpanded jets from square supersonic micro nozzles (2017)
  • Author(s): MAEDA Hiroaki, FUKUDA Hikaru, NAKAO Shinichiro, MIYAZATO Yoshiaki, and ISHINO Yojiro
  • Organizer: Experimental Fluid Mechanics 2017
  • Int'l Joint Research
• [Presentation] Computer flow visualization of underexpanded jets from axisymmetric supersonic micro nozzles (2017)
  • Author(s): FUKUDA Hikaru, MAEDA Hiroaki, ONO Daisuke, NAKAO Shinichiro, MIYAZATO Yoshiaki, and ISHINO Yojiro.
  • Organizer: 11th Pacific Symposium on Flow Visualization and Image Processing, (PSFVIP-11)
  • Int'l Joint Research
• [Presentation] Structure of underexpanded supersonic jets from axisymmetric Laval nozzles (2017)
  • Author(s): MAEDA Hiroaki, FUKUDA Hikaru, KUBO Kazunori, NAKAO Shinichiro, ONO Daisuke, and MIYAZATO Yoshiaki
  • Organizer: 11th Pacific Symposium on Flow Visualization and Image Processing, (PSFVIP-11)
  • Int'l Joint Research
• [Presentation] Optical Flow Investigations of Shock Induced Flow Separation in Critical Nozzles at Low Reynolds Numbers (2016)
  • Author(s): Yagi,S., Inoue,S., Nakao,S., Ono,D., and Miyazato,Y.
  • Organizer: 13th International Conference on Flow Dynamics
  • Place of Presentation: 仙台国際センター（宮城県仙台市）
  • Year and Date: 2016-10-10
  • Int'l Joint Research
• [Presentation] Optical Measurements of Shock Wave Oscillations in Critical Nozzles at Low Reynolds Numbers (2016)
  • Author(s): Yagi,S., Inoue,S., Nakao,S., Ono,D., and Miyazato,Y.
  • Organizer: 13th International Conference on Flow Dynamics
  • Place of Presentation: 仙台国際センター（宮城県仙台市）
  • Year and Date: 2016-10-10
  • Int'l Joint Research
• [Presentation] RANS Simulations of Overexpanded Critical Nozzle Flows at Low Reynolds Numbers (2016)
  • Author(s): Yagi,S., Nakao,S., Ono,D., and Miyazato,Y.
  • Organizer: 13th International Conference on Flow Dynamics
  • Place of Presentation: 仙台国際センター（宮城県仙台市）
  • Year and Date: 2016-10-10
  • Int'l Joint Research
• [Presentation] Michelson Interferometric Meaurements and Numerical Calculations for Axisymmetric Supersonic Microjets (2016)
  • Author(s): Muranaka,T., Ono,D., Nakao,S., and Miyazato, Y.
  • Organizer: The 27th International Symposium on Transoport Phenomena
  • Place of Presentation: Honolulu,USA
  • Year and Date: 2016-09-20
  • Int'l Joint Research
• [Presentation] Preliminary Experiments on Quantitative Visualization of Shock Trains by Rainbow Schlieren Deflectometry (2016)
  • Author(s): Matsuyama,A., Takano,H., Ono,D., Nakao,S., and Miyazato,Y.
  • Organizer: The 27th International Symposium on Transoport Phenomena
  • Place of Presentation: Honolulu,USA
  • Year and Date: 2016-09-20
  • Int'l Joint Research
• [Presentation] Measurements of Shock Train Oscillations by High-Speed Mach-Zehnder Interferometers (2016)
  • Author(s): Goto,S., Kitamura,K., Ono,D., Nakao,S., and Miyazato,Y.
  • Organizer: The 27th International Symposium on Transoport Phenomena
  • Place of Presentation: Honolulu,USA
  • Year and Date: 2016-09-20
  • Int'l Joint Research
• [Presentation] Measurements of Oscillating Shock Train by Laser Schlieren Methods (2016)
  • Author(s): Kitamura,K., Goto,S., Ono,D., Nakao,S., and Miyazato,Y.
  • Organizer: The 27th International Symposium on Transoport Phenomena
  • Place of Presentation: Honolulu,USA
  • Year and Date: 2016-09-20
  • Int'l Joint Research
• [Presentation] Rainbow Schlieren Measurements in Underexpanded Jets from Axisymmetric Supersonic Micro Nozzles (2016)
  • Author(s): Fukuda,H., Maeda,H., Ono,D., Nakao,S., Miyazato,Y., and Ishino,Y.
  • Organizer: The 27th International Symposium on Transoport Phenomena
  • Place of Presentation: Honolulu,USA
  • Year and Date: 2016-09-20
  • Int'l Joint Research
• [Presentation] Application of Rainbow Schlieren Deflectometry for Slightly Underexpanded Supersonic Jets from Axisymmetric Laval Nozzles (2016)
  • Author(s): Maeda,H., Fukuda,H., Ono,d., Nakao,S., and Miyazato,Y.
  • Organizer: The 27th International Symposium on Transoport Phenomena
  • Place of Presentation: Honolulu,USA
  • Year and Date: 2016-09-20
  • Int'l Joint Research
• [Presentation] シュリーレンＣＴを用いた矩形先細ノズルによる不足膨張音速噴流の定量的可視化計測 (2016)
  • Author(s): 秋田勇太，小野大輔，仲尾晋一郎，宮里義昭
  • Organizer: 日本機械学会九州支部第６９期総会講演会
  • Place of Presentation: 熊本大学工学部（熊本県熊本市中央区）
  • Year and Date: 2016-03-15
• [Presentation] Assessment of Numerical Simulation for Underexpanded Sonic Jet issued from Axisymmetric Convergent Nozzles (2015)
  • Author(s): Akita, Y., Nakao, S., Ono, D., and Miyazato, Y.
  • Organizer: The 2015 Asia-Pacific International Symposium on Aerospace Technology (APISAT2015)
  • Place of Presentation: Cairns, Queensland, Australia
  • Year and Date: 2015-11-25
  • Int'l Joint Research
• [Presentation] Numerical Simulations of Free Jets from Square Supersonic Nozzles (2015)
  • Author(s): Nakao, S., Muranaka, T., Miyazato, Y., Kashitani, M., and Yamaguchi, Y.
  • Organizer: Twelfth International Conference on Flow Dynamics (ICFD2015)
  • Place of Presentation: Ｓｅｎｄａｉ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｃｅｎｔｅｒ，Sendai, Ｍｉｙａｇｉ，Japan
  • Year and Date: 2015-10-27
  • Int'l Joint Research
• [Presentation] Three-Dimensional Rainbow Schlieren Measurements in Underexpanded Sonic Jets from Axisymmetric Convergent Nozzles (2015)
  • Author(s): Takano, H., Kamikihara, D., Ono, D., Nakao, S., Yamamoto, H., and Miyazato, Y.
  • Organizer: 12th International Symposium on Experimental Conputational Aerothermodynamics of Internal Flows
  • Place of Presentation: Lerici, Italy
  • Year and Date: 2015-07-13
  • Int'l Joint Research
• [Presentation] Quantitative Estimation for RANS-Simulation of Underexpanded Sonic Jets from Axisymmetric Convergent Nozzles (2015)
  • Author(s): Kamikihara, D., Takano, H., Ono, D., Nakao, S., and Miyazato, Y.
  • Organizer: 12th International Symposium on Experimental Conputational Aerothermodynamics of Internal Flows
  • Place of Presentation: Lerici, Italy
  • Year and Date: 2015-07-13
  • Int'l Joint Research
• [Funded Workshop] 12th International Symposium on Experimental Computational Aerothermodynamics of Internal Flows (2015)
  • Place of Presentation: Lerici, Italy
  • Year and Date: 2015-07-13