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Abstract
Multiple turbulent diffusion flames with swirl have been investigated experimentally. The degreeof swirl was varied from 0.2 to 0.57 and the burner separations were changed from 0.25DE to 1.50DE. Temperature and composition surveys were made at various axial and radial positions. A dilution factor which is a measure of the air entrained into the flame is defined and computed. It was found that the flame stability and length of the flames depended mainly on the swirl level and burner separation. Large interaction between burners with, narrow separation and low swirl number was found.