This paper shows that a flame can be an intrinsically unstable acoustic element. The finding
is clarified in the framework of an acoustic network model, where the flame is described by …

The combustion instability of a partially premixed swirl burner is investigated by
experimental tests and numerical modeling. The experimental results show that the …

The present work deals with time-resolved investigation of the flow field during acoustic self-
excitation by a lean premixed flame in a dump combustor. Simultaneous measurements of …

There are several mechanisms through which turbulent flames produce sound. In low Mach
number, unconfined flows, direct combustion noise–ie, unsteady gas expansion generated …

The flame transfer function (FTF) and acoustic transfer function (ATF) are estimated
experimentally and numerically, respectively, and both are combined to predict combustion …

This paper presents a one-dimensional thermoacoustic model for a dump combustor in
terms of two acoustic impedances just before and after a flame/area-expansion location. A …

This paper presents a thermoacoustic model in the frequency domain for multi-burner
combustors composed of multiple plenum-nozzle-chamber modules with cross-talk at both …

The response of three flames with different degrees of premixedness (fully premixed, non-
premixed with radial, and non-premixed with axial fuel injection) to acoustic oscillations is …

In this paper we propose a new approach for an analysis and a prediction of combustion
instability of lean premixed gas turbines. Our approach is based on the Nyquist stability …

In this study we develop an analytic thermoacoustic model of a combustor for gas turbines.
The combustor under consideration is composed of a premixing chamber, a nozzle, and a …