D342 微小重力下超臨界雰囲気中における燃料液滴の自発着火および火炎の挙動

概要

論文の詳細を見る
An experimental study has been made of the autoignition of single fuel droplets in supercritical gaseous environment under microgravity condition. Primary attention was focused both on the ignition delay and on the flame diameter in the present tudy. 1-Octadecanol was selected as the main test fuel. Mixture of oxygen and carbon dioxide was used as the ambient gas. Ignition delay was found to have a maximum with increasing the ambient pressure in the range above the critical pressure of the fuel tested. Higher oxygen concentration of the ambient gas caused shorter ignition delay at ambient pressures equal to or above the pressure at which ignition delay had a maximum. Higher ambient pressure caused smaller droplet flame diameter at the onset of autoignition, and higher flame growth rate and larger flame diameter afterwards. The flame diameter decreased with increasing the oxygen concentration of the ambient gas.
日本流体力学会の論文
2001-07-31