40眼カメラとCT法による瞬間三次元分布計測手法 : 乱流予混合火炎の輝度分布の計測 New Three-Dimensional Measurement Technique using Multi-Lens Camera and CT method : Measurement of Instantaneous Distribution of Light Emission of Turbulent Premixed Flame

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The advanced CT (computerized tomography) reconstruction technique for measuring an instantaneous three-dimensional distribution of chemiluminescence of a turbulent premixed flame is accomplished. In the technique, first, instantaneous two-dimensional images (projections) of an objective flame are simultaneously taken from forty horizontal directions with a forty-lens camera. Next 550 horizontal CT images, which are reconstructed from the projections by MLEM (maximum likelihood expectation maximization) algorithm, are vertically accumulated, resulting in an instantaneous three-dimensional distribution of flame-chemiluminescence. Results for a propane-air fuel-rich-premixed turbulent flame are as follows. The flame front is observed to be a thin wrinkled luminous region of 0.6mm in thickness. The three-dimensional result clearly shows that the cusps observed in horizontal cross-sections correspond to ridges of the three-dimensional flame front. The luminosity is quenched at the ridges by Lewis number effect. Finally, various types of display of three-dimensional distribution are performed to demonstrate the three-dimensionality of data acquisition.

収録刊行物

  • 可視化情報学会誌. Suppl.

    可視化情報学会誌. Suppl. 24(1), 175-178, 2004-07-01

    社団法人 可視化情報学会

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各種コード

  • NII論文ID(NAID)
    10013272948
  • NII書誌ID(NCID)
    AA11907562
  • 本文言語コード
    JPN
  • 資料種別
    SHO
  • ISSN
    09164731
  • NDL 記事登録ID
    7030211
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z15-431
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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