Diffusion Flame Stabilized on a Porous Plate in a Parallel Airstream
Diffusion Flame Stabilized on a Porous Plate in a Parallel Airstream
复制标题
平行气流中多孔板上的扩散火焰稳定
作者：
T. A. Rohmat;H. Katoh;T. Obara;Teruo Yoshihashi;S. Ohyagi
实验研究了平行气流中障碍物对多孔板上层流扩散的结构和稳定性的影响。障碍物是后向台阶或矩形圆柱体，位于多孔板的上游，气体甲烷通过该多孔板均匀地注入。用直接照相法和纹影照相法对其结构进行了分析。描述了火焰的形状，绘制了自由流速度和燃油喷射速度的稳定性图，并结合流型结构进行了讨论。
Effects of an obstacle on the structure and stability of a laminar diffusion e ame established on a porous plate in a parallel airstream have been investigated experimentally. The obstacle, a backward-facing step or a rectangular cylinder, is located upstream of the porous plate through which gaseous methane is injected uniformly. Structures of the e ame are elucidated by the direct and schlieren photography. Flame shapes are described and stability diagrams are plotted for the freestream velocity and the fuel injection velocity, which are discussed with e ow structures.