A preliminary experimental study of pattern factor for a triple swirler combustor

To reduce the requirement of high-temperature combustor on pattern factor,a triple swirler was used to test the pattern factors of three different triple swirler packages.The focus of the research was placed on the effects of vane angle of triple swirler and equivalence ratio of the combustor dome on the combustor’s pattern factor.Gas analysis method was used for the measurement of combustor exit temperature.The result show that,when the swirl air from the third swirler and the second swirler was counter-rotating,the combustor exit temperature distribution became more uniform;and the lower the equivalence ratio of the combustor dome,the more uniform the combustor exit temperature distribution was.The vane angle and the equivalence ratio of the combustor dome should be taken into account in order to optimize the combustor’s pattern factor.