Comparison of the flame dynamics of a premixed dual fuel burner for kerosene and natural gas

In this study, the flame dynamics of swirl stabilized lean premixed combustion is investigated for kerosene and natural gas operation. A burner retrofitted with a twin-fluid nozzle to allow performing all experiments identical hardware. The mixture preparation complexity stepwise increased from perfectly technically lastly combustion. Flame transfer functions (FTFs) three configurations are presented compared each other. This approach allows experimentally decompose FTF isolate contributions equivalence ratio fluctuations droplet dynamics. Furthermore, data systematic variation air mass flow in operation impact spray quality convective delay time on discussed. For points, stationary images provided evaluated as basis interpretation. Additionally, NO emissions measured order determine degree premixing Through comparison, it was found that frequency range which droplets react acoustic forcing can be read phase. have significant whereas change does not affect FTF.