517 微小重力場における模擬石炭粒子群の点火に関する研究(北海道における宇宙活動III)(オーガナイズドセッション(d)北海道における宇宙活動)

概要

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The purpose of this study is to investigate mutual influences of fine coal particles in a coal dust cloud on the ignition process. Ignition processes of a cluster of four coal particles in high temperature atmosphere are observed. Spherical active carbons impregnated with salicylic acid are employed as fuel particles. Four fuel particles are arranged on tops of a regular tetrahedron. To remove the influence of the natural convention, experiments are made under microgravity. As a result, a bright luminous flame is observed with a small interval of fuel particles. This is because the density of a volatile matter around each fuel particle is high and oxygen supply by diffusion is obstructed. The shortage of oxygen results in the increase of soot formation, and the brightness of the luminous flame increases.
一般社団法人日本機械学会の論文
2000-09-25