The centrally staged combustor is an effective way to reduce NOx emissions from
combustors. However, combustion instability caused by the mutual coupling between flames …

This study mainly investigates the flame and flow characteristics under combustion instability
in a centrally-staged swirl spray combustor, using 5 kHz CH* chemiluminescence (CL) and …

Multi-bifurcation behaviors of staged swirl flames fueled with methane at atmospheric
pressure are experimentally investigated by varying the global equivalence ratio (⁠ ϕ glo⁠) …

In the start-up process of practical gas turbine applications, the modulation of operating
condition, especially the variation of global equivalence ratios (ϕ glo), could cause the …

In a centrally-staged combustor, the stratified swirling flame often manifests a helical mode,
which is characterized by the emergence of helical vortices, including the precessing vortex …

Combustion instabilities have been a plaguing challenge in lean-conditioned propulsion
systems. An open-loop control system was developed using machine learning to suppress …

The present study investigates the effect of the exit geometry of the main stage on
thermoacoustic instabilities in a model combustor with a dual-swirl layout. In practical …

Centrally staged combustion technique is often used in the military high-temperature-rise
combustor. The pilot-stage structure affects the flow characteristics in the centrally staged …

Operating condition modulation plays a key role in the startup process of practical gas
turbine applications. The present article investigates the operating condition modulations of …

This study focuses on one of the critical design parameters of lean premixed (LPM)
combustors—the air split ratio (ASR) between the pilot and main stages. The effect of the air …