A Study on Numerical Modeling of Swirl-Premix Burners for Simulation of Gas Turbine Combustion
가스터빈 연소기의 연소장 해석을 위한 스월 예혼합 버너의 수치적 모델링에 관한 연구
Abstract
Efficient numerical analysis of combustion induced by premixed swirl multi-burners in a gas turbine combustor is conducted by adopting swirler model. By analyzing the internal recirculation zone, the inner and outer diameters of the swiler are determined to be 28 mm and 76mm to 28mm, respectively. Tangential velocity of 35m/s is determined from swirl and recirculation angles. With swirler model adopted, the predicted temperature of combustion gas agrees well with that from single-burner calculation without the model. But, NOx emission is underestimated by 60 %.