3D-CT(Computer Tomography) Measurement of an Instantaneous Density Distribution of Turbulent Flames with a Multi-Directional Quantitative Schlieren Camera (Reconstructions of High-Speed Premixed Burner Flames with Different Flow Velocities)

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• 作者：Yojiro Ishino ; Naoki Hayashi ; Ili Fatimah Bt Abd Razak…
• 关键词：Schlieren observation ; Computer tomography ; Turbulent flame ; 3D measurement ; Premixed flame
• 刊名：Flow, Turbulence and Combustion
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：96
• 期：3
• 页码：819-835
• 全文大小：3,237 KB
• 参考文献：1.Saiki, Y., Tomida, Y., Shiga, S., Ishino, Y., Ohiwa, N.: Measurement of a Local Burning Velocity of a Turbulent Premixed Flame by Simultaneous 3D-CT Reconstruction with 40-Lens Camera and Stereoscopic PTV. Proceedings of 8th ETMM (2010)
  2.Ishino, Y., Ohiwa, N.: Three-Dimensional Computerized Tomographic Reconstruction of Instantaneous Distribution of Chemiluminescence of a Turbulent Premixed Flame. JSME Int J B48(1), 34–40 (2005)CrossRef
  3.Ishino, Y., Hirano, T., Hirano, M., Ohiwa, N.: Non-Scanning 3D-CT Visualizations of Premixed Flames with a 40-Lens Camera. Proceedings of The 6th Pacific Symposium on Flow Visualization and Image Processing A2–2, 1-6 (2007)
  4.Ishino, Y., Okita, Y., Saiki, Y.: Mizokami, T.: 4D-CT Measurement of a Turbulent Premixed Flame by Simultaneous Multi-Directional High-Speed Photography with Multi-Mirror Optical Capture System. Proceedings of Int. Symp on EcoTopia Science’11 (2011)
  5.Ishino, Y., Horimoto, K., Kato, T., Ishiguro, S., Saiki, Y.: Multi-Directional Quantitative Schlieren Observations for 3D-CT Reconstruction of Three-Dimensional Density Distribution of Steady Non-axisymmetric Premixed Flame. Proceedings of the 9th Asia-Pacific Conference on Combustion (2013)
  6.Al-Ammar, K., Agrawal, A.K., Gollahalli, S.R., Griffin, D.: Application of rainbow schlieren deflectometry for concentration measurements in an axisymmetric helium jet. Exp. Fluids 25, 89–95 (1998)CrossRef
  7.Kolhe, P.S., Agrawal, A.K.: Turbulence Measurements for Numerical Validation Acquired by Ultra High-speed Rainbow Schlieren Deflectometry. AIAA2014-0550, 1-11 (2014)
  8.Mitchell, W.D., Ajay, K., Agrawal, A.K.: Investigation of acoustic waves emanated from a supersonic jet using ultra-high speed whole-field optical measurements. AIAA2014-1225, 1-18 (2014)
  9.Ishida, Y., Miyazato, Y., Ono, D.: Rainbow schlieren measurements in underexpanded sonic jets from axisymmetric convergent nozzles. AIAA2012-0404, 1-9 (2012)
  10.Upton, T.D., Verhoeven, D.D., Hudgins, D.E.: High Resolution Computed Tomography of a Turbulent Reacting Flow. Experiments in Fluids, Online First, 14 June (2010)
  11.Dempster, A.P., Laird, N.M., Rubin, D.B.: Maximum-Likelihood from Incomplete Data via the EM Algorithm. J. R. Stat. Soc. B 39, 1–38 (1977)MathSciNet MATH
  12.Yokoi, T., Shinohara, H., Hashimoto, T., Yamamoto, T., Niio, Y.: Implementation and performance evaluation of iterative reconstruction algorithms in SPECT: A simulation study using EGS4. Proceedings of The Second Int. Workshop on EGS, KEK Proceedings 200–20, 224-234 (2000)
  13.Ishino, Y., Horimoto, K., Kato, T., Ishiguro, S., Saiki, Y.: 3D-CT Measurement of Premixed Flames Using a Multi-Directional Quantitative Schlieren Optical System (Solo-Measurement of Density and Combined- Measurement of Density and Light-Emission distributions). Procedia Eng. 67, 303–316 (2013)CrossRef
  14.Zhao, J., Lua, Y., Jin, Y., Bai, E., Wang, G.: Feldkamp-type reconstruction algorithms for spiral cone-beam CT with variable pitch. J. Xray Sci. Technol. 15, 177–196 (2007)
  
• 作者单位：Yojiro Ishino (1)
  Naoki Hayashi (1)
  Ili Fatimah Bt Abd Razak (1)
  Takahiro Kato (1)
  Yudai Kurimoto (1)
  Yu Saiki (1)
  
  1. Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Japan
  
• 刊物类别：Engineering
• 刊物主题：Physics
  Mechanics
  Automotive Engineering
  
• 出版者：Springer Netherlands
• ISSN：1573-1987

文摘

In order to provide a suitable technique for 3D observation of high speed turbulent flames, non-scanning 3D-CT(Computer Tomography) technique using a multi-directional quantitative schlieren system with flash light source, is proposed for instantaneous density distribution of unsteady premixed flames. This “schlieren 3D-CT” is based on (i)simultaneous acquisition of flash-light schlieren images taken from numerous directions, and (ii) 3D-CT reconstruction of the images by an appropriate CT algorithm. In this paper, first, as a preliminary research, 3D-CT reconstruction of non-axisymmetric steady flame is made with a single-directional quantitative schlieren system. Next, with custom-made 20 directional schlieren camera, instantaneous density distributions of a high-speed turbulent flames of nozzle exit velocities of 8.0 and 10.0 m/s has been CT-reconstructed. The 3D-views of the reconstructed flame front shape clearly give the information of the flame structure with fine scale corrugations. Based on the distributions, area-enlargement rates of the flame front area are derived, and investigated.