差分画像相関法による水素-空気爆燃速度の解析と爆風圧の評価(熱工学,内燃機関,動力など)

概要

論文の詳細を見る
Detailed observations of hydrogen-air spherical deflagrations in open space were obtained using a combination of an image velocimetry and blast pressure measurements. Latex balloons of 0.15 and 1.4m^3 vapor clouds were ruptured and ignited at the center of the clouds. An image velocimetry using brightness subtraction was employed to obtain accurate time evolution records of flame propagation velocity. The maximum flame propagation velocity of about 100m/s was observed in the 0.15m^3 of equivalence ratio 2.0 and in the 1.4m^3 cloud of equivalence ratio 3.0. The turbulent burning velocities were estimated to be several fold of the laminar burning velocities. It is observed that the propagating flame with the maximum velocity generates the signal of the maximum peak pressure of blast wave propagating with the sound velocity.
社団法人日本機械学会の論文
2009-05-25