AN INVESTIGATION OF MULTIPLE JET ACETYLENE FLAMES

The interaction between turbulent acetylene flames was investigated ex perimentally by the analysis of their visible lengths. The study invol ved 1, 2, 3 and 5 turbulent flames formed by parallel vertical jets wh ose relative distance was varied. The tube internal diameters were 1, 2, 3 and 4.4 mm. The results quantify the increase of flame length of multiple jets of equal injection tube radii and equal initial velociti es as the flame separation distance decreases and as the number of jet s increases. An empirical formula relating the length of multiple jet flames to that of the individual flame of same burner diameter was der ived. Results of experiments performed with parallel burners inclined of 45 degrees in relation to the vertical direction are also presented .