An Investigation into Dynamics of Premixed Flames Stabilized in Turbulent Swirl Flows Using High-Speed OH-PLIF Measurements

• Yabuta Koji

  Tokyo Institute of Technology

• Aoki Kozo

  Tokyo Institute of Technology

• Minamoto Yuki

  Tokyo Institute of Technology

• Shimura Masayasu

  Tokyo Institute of Technology

• Tanahashi Mamoru

  Tokyo Institute of Technology

Bibliographic Information

Other Title

• 高時間分解能 OH-PLIF 計測による旋回乱流予混合火炎の動的特性の解明

Abstract

To investigate the characteristics of flame dynamics due to combustion oscillation, high-speed OH planar laser induced fluorescence (PLIF) measurements of methane-air turbulent premixed flame have been performed in a laboratory scale swirl combustor. The measurements are conducted under conditions where the total flow rate is 250 L/min, and the equivalence ratios are 0.70, 0.81, 0.90. Pressure fluctuation and CH chemiluminescence are simultaneously measured during the OH-PLIF. The dynamic mode decomposition (DMD) is applied to the series of OH-PLIF images. The mode corresponding to the dominant frequency of the pressure fluctuation is found to be stripe shaped in the upstream, while it shows a relatively large structure.

Journal

• The Proceedings of the Thermal Engineering Conference

  The Proceedings of the Thermal Engineering Conference 2016 (0), E225-, 2016

  The Japan Society of Mechanical Engineers

Keywords

• Gas Turbine Combustor
• Turbulent Swirl Flame
• Combustion Oscillation
• OH-PLIF
• DMD

Details

• CRID: 1390282680857997952
• NII Article ID: 130007136539
• DOI: 10.1299/jsmeted.2016.e225
• ISSN: 2424290X
• Web Site: https://www.jstage.jst.go.jp/article/jsmeted/2016/0/2016_E225/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed