CFD Predictions of N+3 Cycle Emissions for a Three-Cup Gas-Turbine Combustor

Ajmani, Kumud ; Lee, Phil ; Mongia, Hukam ; Tacina, Kathleen C

关键词: GAS TURBINE ENGINES;    FUEL INJECTION;    COMPUTATIONAL FLUID DYNAMICS;   

RP-ID  :  GRC-E-DAA-TN57816

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

The National Combustion Code (OpenNCC) was used to perform non-reacting and two-phase reacting flow computations for a unique pre-filming type LDI-3 fuel injector for a three-cup, nineteen-element flametube configuration. All computations were performed with a consistent approach of mesh-generation, spray modeling, reduced finite-rate kinetics and turbulence-chemistry interaction, as developed for CFD analysis of single-element and multi-element LDI-3 designs with OpenNCC. Emissions and flowfield characteristics were predicted for a generic NASA N+3 engine cycle, with particular focus on the 7% and 30% ICAO power operating conditions. For both the conditions studied, the CFD analysis provided very good predictions for EINOx when compared with experimental data measured at NASA Glenn Research Center.