Photo Contest

2013 Photo Contest -Beautiful Flames- The HIGHEST AWARD


“Spiral” tubular flame formed by a rapidly mixed type ~Ice-cream-like Flame~
AWATA Hirotaka, ASANO Yuuya, HAYASHI Jun, AKAMATSU Fumiteru
Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan

This flame was formed by rapidly mixing type of tubular flame burner. Although it looks like a cylindrical flame with the long exposure observation, a symmetric spiral striped pattern was observed inside of the cylindrical glass combustion tube with a short exposure photograph. This fantastic spiral striped pattern can be seen in the cylindrical glass combustion tube as well as outside of the combustion tube. The high brightness spiral strip appeared in the cylindrical glass combustion tube looks like a waffle cone, and the low brightness spiral sprit appeared outside of the combustion tube looks like an ice cream. This photograph captured an instantaneous beautiful feature of the rapidly mixing type tubular flame.
Camera & Lens: NIKON D7000 & Nikon AF24 F2.8D
F-number: F2.8, Shutter speed: 1/640 s, ISO:6400

2013 Photo Contest -Beautiful Flames- The MERIT AWARD (in Japanese)


金 佑勁1,茂木 俊夫1,桑名 一徳2,土橋 律1
1 東京大学 大学院工学系研究科
2 山形大学大学院理工学研究科