Experimental and Simulation Study on the Emissions of a Multi-Point Lean Direct Injection Combustor

Spurred by the world’s attention to pollution emissions from commercial aero-engines, International Civil Aviation Organization (ICAO) has made more stringent emission regulations for civil aircraft engines, especially NOx emission.This paper develops a Five-Point lean direct injection (LDI) combustor with three swirler schemes reduce of engines. The flowfield is studied numerically. Moreover, combustion efficiency and gaseous in different inlet conditions fuel ratios main stage (α) are experimentally. corresponding results reveal that, under fuel-air ratio (FAR) between 0.0130 0.0283 an α value 30% 60%, 99.18%, 98.83%, 99.03% when pilot works alone, 99.69%, 99.23%, 99.75% work simultaneously. Furthermore, experimental suggest that decreases as increases, demonstrating convergent tremendous advantage reducing over Venturi.