矩形ダクト内予混合燃焼波に対する管内物体の影響

抄録

This study reports on the experiment about combustion wave propagating in the tube. In the experiment, hydrogen is used for fuel. the experimental tube has rectangular cross section and the cross-sectional area is 900mm². The length is 1016mm. This tube has 5 holes. There are connected to pressure tube gage, fuel valve, vacuum drawing valve and piezometer. It is researched that the effect of the equivalence ratio and of the obstacles. In terms of the resarch on the effect of the equivalence ratio, the experiments are conducted on three conditions, 0.8, 1.0, 1.3. In the case of 0.8, pressure rises most gently in the three. In the case of 1.3, pressure rise most sharply. Judging from these results, the larger the equivalence ratio, more rapidly pressure rise. In terms of the research on the effect of the obstacles, the experiments are conducted using the angle of the block as a parameter. There are four kinds of angles, 0°,30°,60°and 90°. At each angle, pressure rise more rapidly with obstacle, than without obstacle. In addition to this, it is seen that the pressure wave arrives early as the angle increases. On the other hand, the maximum pressure does not depend on the angle.