Photo Contest

2001 Photo Contest -Beautiful Flames- The HIGHEST AWARD


Microgravity Diffusion Flame Releasing Large Soot Agglomerates
Kenichi ITO, Osamu FUJITA
Hokkaido University

Diffusion flame in microgravity releases incandescent spots continuously at the tip of the flame. Fuel is butane injected from circular tube with low velocity. The incandescent spots are large cluster of primary soot particles. Long residence time in microgravity diffusion f1ame allows agglomeration of soot particles as large as can be observable with naked eyes. (Fuel: Butane, Mean injection velocity: 2.1 cm/s, Surrounding 02: 50%, Inner diameter of burner tube: 6mm)