Patent ID: 8919128

Claim:
A method of damping thermoacoustic oscillations in a cavity, comprising: connecting a resonator to the cavity by a resonator pipe where the resonator has a resonator volume that has a tendency toward thermoacoustic oscillation; inducing thermoacoustic oscillations in the cavity; producing damping oscillations in the resonator volume that are matched to the thermoacoustic oscillations; coupling at least a portion of the damping oscillations into the cavity through the resonator pipe such that the damping oscillations and thermoacoustic oscillations overlap in an overlap region wherein the overlap region exists at, an intersection of the cavity and the resonator pipe; canceling at least a portion of the oscillations in the overlap region; coupling at least a portion of the thermoacoustic oscillations out of the cavity by a coupling-out pipe that is separate from the resonator pipe and whose length is adjustable and coupled into the resonator volume, with the thermoacoustic oscillation in the coupling-out pipe changeable by adjusting the coupling-out pipe, wherein the thermoacoustic oscillations are induced by combustion oscillations in the cavity.