火炎中における煤粒子の形態と光学的性質

火焰中烟灰颗粒的形态和光学特性

• 批准号: 08650258
• 负责人: 水谷 幸夫
• 金额: $ 1.54万
• 依托单位: Kinki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650258/
• 关键词: 火炎中の煤粒子; 光学的測定; 電子顕微鏡観察; 一次球形粒子凝集体; 一次球形粒子数分布; フラクタル次元; 煤の光学的性質; 予混合火炎

電子顕微鏡写真から得られる煤の一次球形粒子径、一次球形粒子凝集体のフラクタル次元,ならびに一次球形粒子数分布に関するデータを,錯乱強度非対称比のデータと組合わせることにより,エチレンの濃予混合火炎中に浮遊する煤凝集体の一次球形粒子数分布と体積平均直径を推定する方法を検討した.凝集体の錯乱特性を与えるモデルとしては,厳密な凝集体散乱理論に基づいて作成された等価球近似法と,電子雲のX線錯乱に対する近似理論であるGuinier lawもしくはRayleigh-Debye-Gans近似法を利用する方法を,互いの精度を比較検討する目的で併用した.そして,火炎軸に沿っての煤粒子の成長の様子を調べるとともに,解析に使用する煤の複素屈折率の値が結果に及す影響の程度を検討した.その結果を要約すると,以下のようになる.(1)凝集体の形状はマスフラクタル指数法則に従うランダム分枝鎖に近く,しかもフラクタル次元はサンプリング時の合体によっても変化せず,1.60程度である.(3)等価球近似を用いる方法と,Rayleigh-Debye-Gans近似を用いる方法との間に大差はないが,後者の方が電子顕微鏡データに近い結果を与える.(3)火炎軸に沿って,一次球形粒子径の僅かな成長と,凝集の顕著な進行が見られる.しかし,凝集体形状(フラクタル次元)と,一次球形粒子数の分布形状(幾何標準偏差)は,ほぼ一定に保たれる.(4)凝集体形状と一次球形粒子数の分布形状に比べれば,複素屈折率が測定結果に与える影響は軽微である.

In the microphoto of the computer, the first spherical particle diameter, the first spherical particle agglomeration, the first spherical particle number distribution, the wrong strength, the wrong strength, the first spherical particle diameter, the first spherical particle size distribution, the first spherical particle diameter, the first spherical particle size distribution, the first spherical particle size distribution, the wrong strength, the wrong strength. In the process of mixed fire, the primary spherical particle number distribution of coal coagulates, the average diameter of the body, the method of estimation, and the method of determining the average diameter of coal agglomerates. The error characteristics of the condensate group and the structure of the cluster, the basic theory of the collective scatter theory, and the ball approximation method, and the Guinier law approximation method, the Rayleigh-Debye-Gans approximation method, the accuracy of each other is better than that of the target. Along the growth of coal particles, the analysis of the results of the results and the results of the results. The results of the experiment are as follows: (1) the shape of the condensed group is similar to that of the cluster. (1) the shape of the condensed collective is similar to that of the cluster. (1) the shape of the condensed collective is similar to that of the cluster, the branch of the cluster is close to the nearest one, the number of variables is very small, and the degree of convergence is 1.60. (3) the ball approximation method is used in this paper. The Rayleigh-Debye-Gans approximate method is used to analyze the difference between the two methods, and the results of the latter are compared with the results. (3) the fire ripples along the rim, the diameter of the spherical particles becomes long, and the agglutination is used to carry on the thermal cycle. The condensate shape, the condensate shape, the primary spherical particle number distribution shape, the primary spherical particle number distribution shape, the condensed collective shape, the primary spherical particle number distribution shape, the condensed collective shape, the primary spherical particle number distribution shape, the condensed collective shape, the primary spherical particle number distribution shape, the primary spherical particle number distribution shape, the primary spherical particle number distribution shape, the primary spherical particle number distribution shape, the primary spherical particle number distribution shape, the primary spherical particle number distribution shape, the primary spherical particle number distribution, the primary spherical particle number distribution, the primary spherical particle number distribution, the primary spherical particle number distribution, the primary spherical particle number distribution, the primary spherical particle number distribution, the primary spherical particle number distribution, the primary spherical particle number distribution, the primary spherical particle number distribution, the primary spherical particle number distribution, the primary spherical particle number distribution, the primary spherical particle number distribution, the primary spherical particle number distribution, the

项目成果

Yukio Mizutani and Kohji Oura: "Transport Phenomena in Combustion・Volume 1" Taylor & Francis (Editor : S.H.Chan), 883 239-250 (1996)

水谷幸雄和大浦晃司：《燃烧中的传输现象·第 1 卷》Taylor & Francis（编辑：S.H.Chan），883 239-250 (1996)