It is accepted that the thermoacoustic behavior of a given combustion system can be
analyzed by investigating how its natural acoustic modes are perturbed by the flame …

Can-to-can acoustic interactions in a circumferential network of lean-premixed combustors
have a prominent role in the development of complicated modal dynamics and large-scale …

Thermoacoustic instabilities in stationary gas turbines may cause high-amplitude limit
cycles, leading to damaged components and costly down-time. To better understand the …

In can-annular combustors, a narrow can-turbine junction leads to an acoustic coupling
between the cans, yielding unique features that greatly impact the (thermo) acoustic …

Thermoacoustic systems can exhibit self-excited instabilities of two nature, namely cavity
modes or intrinsic thermoacoustic (ITA) modes. In heavy-duty land-based gas turbines with …

An effective impedance that models the aeroacoustic coupling between periodic arrays of
ducts that communicate via apertures is derived. A lumped description of the interaction …

Operation under stable conditions is an important prerequisite for gas turbine safety. While
recent studies have focused primarily on acoustic design to avoid thermoacoustic …

Can-annular combustors feature clusters of thermoacoustic eigenvalues, which originate
from the weak acoustic coupling between coupled oscillators. Each oscillator represents the …

This study investigates the acoustic characteristics of impingement sheets that are typically
installed around can-combustors in stationary gas turbines for cooling purposes. From an …

Heavy-duty land-based gas turbines with can-annular combustors typically exhibit a set of
thermoacoustic modes with similar frequencies, due to their rotational symmetry and the …