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2001 Fiscal Year Final Research Report Summary

Investigation of the Elementary Process in Turbulent Combustion

Research Project

Project/Area Number 12450088
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionOsaka University

Principal Investigator

TAKAGI Toshimi  Osaka University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (40029096)

Co-Investigator(Kenkyū-buntansha) KINOSHITA Shinichi  Osaka University, Graduate School of Engineering, Research Associate, 大学院・工学研究科, 助手 (70263209)
KOMIYAMA Masaharu  Osaka University, Graduate School of Engineering, Assistant Professor, 大学院・工学研究科, 講師 (40178372)
OKAMOTO Tatsuyuki  Osaka University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (40127204)
Project Period (FY) 2000 – 2001
KeywordsTurbulent Diffusion Flames / Extinction / Preferential Diffusion / Flame Curvature / Flame Temperature / Numerical Analysis / Laser-Rayleigh Scattering Method / Laser Induced Fluorescence
Research Abstract

The turbulent diffusion flame is supposed to be an ensemble of the laminar flamelets which should be strained unsteadily and have positive or negative curvature, and be affected by preferential diffusion. In this study, experimental flame visualization and quantitative detection of temperature and OH concentration were conducted by use of the two-dimensional time-dependent laser Rayleigh scattering and OH laser induced fluorescence methods. Numerical studies were also conducted taking into account detailed chemical kinetics and multi component diffusion to predicted the characteristics of the experimental evidence and revealed the processes dominating the transient behavior of the flame with respect to the flame curvature and flame stretch. Attentions were paid to the effects of the flame stretch, flame curvature, preferential diffusion, unsteadiness and locality of the stretch on the flame temperature and flame extinction.
(1) Flames with a controlled steady and unsteady strain were fo … More rmed to investigate the effects of positive and negative strain, flame curvature and unsteadiness on the flame temperature and local extinction by use of the two dimensional temperature detection by Rayleigh scattering.
(2) Flames interacted with large scale vortices were formed by acoustic excitation to the fuel flow to investigated the interaction between flame and vortex by the detection of the OH concentration by the laser induced fluorescence together with and temperature detection by Rayleigh scattering paying attention to the local extinction due to the interaction.
(3) Numerical simulation was conducted of the flames noted above taking into account multi component diffusion and the detailed chemical dynamics to make clear the interaction of the flame and the fluid dynamics. The large stretch which should induce the local quenching does not necessarily induce the flame quenching due to the unsteadiness and locality. It is also pointed out that the flame extinction is induced by the defect of the fuel or oxidizer interacted with the vortex. Less

  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] Liqun Mao: "Lifting Mechanism of Inverse Diffusion Flames"The 28th International Symposium on Combustion, Work-in-Progress. (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masaharu Komiyama: "On the Structure and Local Extinction Affected by the Preferential Diffusion in a Flame Interacted with a Large Vortex"The 28th International Symposium on Combustion, Work-in-Progress. (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ryoji Kawabe: "Measurements of Two-dimensional Temperature, OH Concentration and Velocity in Diffusion Flames Intercted with Large Scale Vortex"Proc. of the 4th JSME/KSME Thermal Engineering joint Conference. 2. 13-18 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shinichi kinoshita: "Numerical Analysis on the Effects of Interaction between Diffusion Flame and Vortex"Proc. of the 4th JSME/KSME Thermal Engineering joint Conference. 2. 19-22 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yuichi Suenaga: "Transient Structure and Characteristics of Negatively Strained Diffusion Flame"Proc. of the 4th JSME/KSME Thermal Engineering joint Conference. 2. 41-46 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 木下進一: "大規模渦の干渉を受ける噴流拡散火炎構造の数値解析"第38回燃焼シンポジウム. 211-212 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 川辺亮二: "大規模渦と干渉する拡散火炎のレーザ画像計測による構造解析"第38回燃焼シンポジウム. 17-18 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 繁本吉広: "拡散火炎の吹き飛び機構に関する数値解析"第38回燃焼シンポジウム. 51-52 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 末永裕一: "伸張を制御した拡散火炎基部構造の解析"第38回燃焼シンポジウム. 225-226 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 吉田憲司: "局所歪を伴う拡散火炎に関する研究(第4報,伸張・圧縮を伴う火炎の構造と特性)"日本機械学会論文集(B編). 67-658. 1516-1522 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masaharu Komiyama: "Measurements by Rayleigh Scattering and LIF in Diffusion Flnames Interacted with Large Scale Vortices"Proc. of the 3rd Asia-Pacific Conference on Combustion. 409-412 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Toshimi Takagi: "Numerical Simulation of the Dynamic Behavior of Diffusion Flames"Proc. of the 1st Taiwan-Japan Workshop on Mechanical and Aerospace Engineering. 2. 599-605 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 林 昭憲: "大規模渦と干渉する拡散火炎のレーザ画像計測による構造解析(第2報)"第39回燃焼シンポジウム. 187-188 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 中島勇夫: "伸張を制御した火炎基部構造と燃焼速度に関する数値解析"第39回燃焼シンポジウム. 35-36 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kenji Yoshida: "Structural Studies of Locally Strained Diffusion Flames (4th Report, Analysis on Characteristics of Positively and Negatively Stretched Flames)"Transactions of Japan Society of Mechanical Engineering (B). 67-658. 1516-1522 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Toshimi Takagi: "Numerical Simulation of Parallel and Counter Flow Diffusion Flames"Korea-Japan Joint Seminar on Numerical Heat Transfer, Seoul, Korea. 97-103 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masaharu Komiyama: "Measurements by Rayleigh Scattering and LIF in Diffusion Flames Interacted with Large Scale Vortices"The Third Asia-Pacific Conference on Combustion, Seoul, Korea. 409-412 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Toshimi Takagi: "Numerical Simulation of the Dynamic Behavior of Diffusion Flames"1st Taiwan-Japan Workshop on Mechanical and Aerospace Engineering, National Cheng Kung University, Tainan, Taiwan, R.O.C.. 599-605 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Liqun Mao: "Lifting Mechanism of Inverse Diffusion Flames"28th International Symposium on Combustion, Work-in-Progress, The Combustion Institute, Edinburgh. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masaharu Komiyama: "On the Structure and Local Extinction Affected by the Preferential Diffusion in a Flame Interacted with a Large Vortex"28th International Symposium on Combustion, Work-in-Progress, The Combustion Institute, Edinburgh. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ryoji Kawabe: "Measurements of Two-dimensional Temperature, OH Concentration and Velocity in Diffusion Flames Interacted with Large Scale Vortex"4th JSME/KSME Thermal Engineering Joint Conference, Kobe. 2-13-2-18 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shinichi Kinoshita: "Numerical Analysis on the Effects of Interaction between Diffusion Flame and Vortex"4th JSME/KSME Thermal Engineering Joint Conference, Kobe. 2-19-2-22 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yuichi Suenaga: "Transient Structure and Characteristics of Negatively Strained Diffusion Flame"4th JSME/KSME Thermal Engineering Joint Conference, Kobe. 2-41-2-46 (2000)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2003-09-17  

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