@article{oai:ir.kagoshima-u.ac.jp:00010651,
 author = {則武, 雅人 and NORITAKE, Masato and 矢野, 利明 and YANO, Toshiaki and 鳥居, 修一 and TORII, Shuichi},
 journal = {鹿児島大学工学部研究報告, The research reports of the Faculty of Engineering, Kagoshima University},
 month = {Sep},
 note = {The present work was performed to elucidate the mechanism of turbulent jet diffusion flames from a circular nozzle by using a high speed video camera. The visible images present an instantaneous display of the turbulent flames. This paper gives information on the turbulence of jet diffusion flames, analyzed from the flame shape which was recorded every 2 milliseconds. An image processing method was employed to visualize the flames shape. In order to obtain the external length and area of flame, a binary image was made from the gray scaled images. A quasi-periodic fluctuation appears in the external length of the flame, and in the area of flame, 
based upon examination of 300 sequential frames of binary images, in the case of Reynolds number 500. Resulting from an increase in the Reynolds number, the periodic fluctuation gradually
disappears, and a high frequency component appears. Its amplitude becomes high. there is a similarity between the external length and area of the flame. Analyzing the binary image of a flame can reveal the physical characteristics of turbulent
diffusion flame behavior.},
 pages = {7--12},
 title = {乱流拡散火炎の乱れ構造の解明},
 volume = {37},
 year = {1995}
}