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 …

The determination of the heat release in technical flames is commonly done via bandpass
filtered chemiluminescence measurements in the wavelength range of OH∗ or CH∗ …

The present work introduces an annular combustion chamber operated at intermediate
pressures. The combustor is operated with CH 4-H 2 blends leading to a variety of azimuthal …

Thermoacoustic transfer functions of a full-scale gas turbine burner operating under full
engine pressure have been measured. The excitation of the high-pressure test facility was …

An experimental investigation of the flow field of a 12 burner annular combustor and a single
burner combustor with the same burner was performed. It has revealed the aerodynamic …

In this study, the heat release rate (HRR) response during self-excited azimuthal
thermoacoustic instabilities in a pressurized annular combustor is investigated for …

A three-dimensional finite element code is used for the eigenvalue analysis of the
thermoacoustic combustion instabilities modeled through the Helmholtz equation. A full …

Imaging of OH* or CH* is often used for the determination of heat release in turbulent flames.
Proportionality is commonly assumed, but was never proven. The study investigates which …

In the present work, Large Eddy Simulation (LES) coupled with a detailed propane/air
mechanism and Adaptive Mesh Refinement (AMR) is employed to simulate the ignition …