年間 4 号発行
ISSN 印刷: 1065-3090
ISSN オンライン: 1940-4336
Indexed in
SIMULTANEOUS VISUALIZATION OF TEMPERATURE AND VELOCITY FIELDS OF FLICKERING FLAME BY COMBINED FLAME REACTION AND PIV
要約
In this paper, simultaneous visualization technique for temperature and velocity fields of a premixed methane air flame is described. The temperature field is visualized by the flame reaction of potassium combined with inverse Abel transformation, while the velocity field of the flame is simultaneously measured by particle image velocimetry (PIV). This new experimental technique allows an insight into the structure of temperature and velocity fields of the flickering flame. It is found that the temperature and the velocity fields in the flickering flame indicate nonlinear oscillation of the flame. During the flame flickering, the temperature in the flame fronts increases to the highest temperature in the merging region, which is followed by the entrainment of the surrounding air into the flame. This fluid motion contributes to the decrease in temperature and self-sustained oscillation of the flame.
-
Fujisawa Nobuyuki, Sakai Kazuki, Yamagata Takayuki, Observation of large-scale structure in flickering diffusion flame by time-resolved particle image velocimetry and shadowgraph imaging, Experimental Thermal and Fluid Science, 92, 2018. Crossref
-
Mahesh Nayak G., Kolhe Pankaj, Balusamy Saravanan, Experimental study of buoyancy-induced instability in the DME and LPG jet diffusion flame, Fuel, 291, 2021. Crossref