Development of Advanced Fuel Injector Concepts for Compact Lean-Burn Gas-Turbine Combustors
摘要
The present work investigates the aerodynamics and atomization characteristics of a lean burn fuel–air mixer assembly using laser flow diagnostic techniques. Two experimental configurations are designed with different pilot fuel injection mechanisms and different swirl configurations. The injector assembly is realized using additive manufacturing methods. Direct laser sheet imaging and particle image velocimetry experiments are conducted to capture the air velocity field and atomization characteristics. The efficacy of the coaxial annular fuel injection mechanism on the atomization characteristics and high swirl number configurations on the external aerodynamics are presented qualitatively.