TY - JOUR
TI - Association of flame-oscillation frequency under cross wind diffusion
AU - Lou Bo
AU - Hu Eric
AU - Wang Ye
JN - Thermal Science
PY - 2019
VL - 23
IS - 6
SP - 3965
EP - 3974
PT - Article
AB - Turbulent flame-oscillation frequency and combustion efficiency are the  important parameters in combustion. It is a useful study to judge combustion  efficiency by intuitive flame frequency. Based on a combustion wind tunnel  experimental setup, the variation law of combustion 9 flame-oscillation  frequency and combustion efficiency using external wind speeds was studied  via the color flames image sequence of oil pan combustion and flue gas  composition. The oscillation frequency was calculated with the upper edge of  the fire plume which recorded flame image sequence using a high-speed video,  combined the MATLimage processing technique. The combustion efficiency  was calculated combined with the C and H element mass of the liquid fuel in  the oil pool and CO2 and H2O concentrations in the flue gas. The results  show that the oscillation frequency of the flame revealed a tendency to  increase followed by a decrease with increasing wind speed, while the  overall trend of combustion efficiency increased first and then decreased.  The combustion efficiency could be judged by observing the oscillation  frequency of the flame image. In addition, the combustion efficiency may  ensure in right way when the turbulence oscillation frequency of the oil pan  flame ranged between 15 HZ and 18 HZ