Project Number: 070
Category: Combustion Products, Aircraft Technology Innovation
There is a recognition that fuel atomization and the fuel/air mixing near the fuel injector both have a significant effect on nvPM formation. These factors are especially important for Rich-Quench-Lean combustion technologies used in many smaller, modern combustors, where nitrogen oxides (NOx) and nvPM trade-offs must be managed through improved mixedness. The goal of this project is to investigate how jet fuel atomization affects the formation and oxidation of nvPM in engine-relevant conditions (pressure, temperature, flow) and develop a validated numerical model for the design of novel fuel injector to reduce nvPM formation in aero-engines.
To achieve this goal, the research team will measure the velocity field, and fuel droplet size and spatial distribution inside the combustor to understand the fuel/air mixing process, intermediate combustion product distributions, nvPM volume fraction and size distribution, and exhaust gas composition to understand the kinetic formation and oxidation process of nvPM. The proposed comprehensive diagnostics will be conducted for a set of current (for baselining) and proposed new fuel injectors provided by an industry partner. The comprehensive experimental data will be used to validate computational models for both a baseline and novel fuel injector to reduce nvPM formation.
Annual Reports
Lead Investigators
Program Managers
Publications
- Drop-Size Measurements Using Phase Doppler Particle Anemometry in a Confined High-Pressure Sector Combustor
- Planar Laser-induced Incandescence for the Study of Soot Production in a Multi-sector RQL Jet a Combustor
- Study of Soot Formation in a Multi-sector RQL Aeroengine Combustor
- Characterization of Non-volatile Particulate Matter in Pressurized Premixed Laminar Jet-A Flames Via Thermophoretic Sampling