Fuel Sensitivity of Lean Blowout in a RQL Gas Turbine Combustor

Wey, C Thomas

关键词: FLAMEOUT;    COMBUSTION CHAMBERS;    GAS TURBINES;    TURBULENCE MODELS;    BOUNDARY CONDITIONS;    AIRCRAFT FUELS;   

RP-ID  :  GRC-E-DAA-TN72312

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Transition from fossil fuels to synthetic drop-in fuels without the need to change existing combustors is the current research topic. The combustor performances such as cold-day ignition limits, lean blow-out (LBO) limits and altitude relight limits are the main focus points. The objective of this work is to evaluate the effect of different fuel candidates on the operability of gas turbines by comparing a conventional petroleum-based fuel with one other alternative fuel candidate. Time filtered Navier-Stokes simulations (TFNS) and K-LES are performed to examine the performance of these fuels at the stable conditions close to blow-out in a referee combustor rig.