Effect of the Combustor Geometries on Combustion and NOx Emission Characteristics in a Lean Premixed Micro Gas Turbine

희박예혼합 마이크로 가스터빈 연소기 형상에 따른 연소특성 및 NOx 배기특성에 관한연구

A numerical analysis of a lean premixed combustor in a micro gas turbine was carried out to investigate the correlation between the turbulent mixing and emission characteristics on the combustor geometries. The interaction between the burners, by flow direction and momentum, significantly influenced on the turbulent mixing and combustion characteristics. The vortex which was generated by thermal expansion was observed during the combustion process, this was distinguished from the combustor geometries. The results showed that these characteristics can affect the NOx emission.