Thermoacoustic oscillations associated with transverse acoustic modes are routinely
encountered in combustion chambers. While a large literature on this topic exists for rockets …

In this paper we describe the time-varying amplitude and its relation to the global heat
release rate of self-excited azimuthal instabilities in a simple annular combustor operating …

A study on the velocity sensitivity and intrinsic thermoacoustic stability of a laminar,
premixed, Bunsen-type flame is carried out. Direct numerical simulation (DNS) of the flame …

Modern gas turbine combustors operating in lean-premixed mode are prone to thermo-
acoustic instabilities. In annular combustion chambers, usually azimuthal acoustic modes …

Large eddy simulations of compressible, turbulent, reacting flow were carried out in order to
identify the Flame Transfer Function (FTF) of a premixed swirl burner at different power …

A novel approach for the analysis of self-excited instabilities in thermo-acoustic systems is
proposed. Combining computational fluid dynamics with low-order acoustic modeling, the …

A low order acoustic network model is used to examine the stability of an annular combustor
for different operating points. The results obtained by this approach are compared against …

Modern large gas turbines for power generation have multiple burners, which are distributed
around the circumference of the engine and which generate flames in combustors of either …

The present study is concerned with the development and validation of efientt numerical
algorithms to check combustion systems for their sensitivity to thermoacoustic instabilities …

Growing airline passenger numbers and a rising environmental awareness of the public
have raised the demand for significant reductions of pollutant emissions from gas turbine …