Controlling combustion instabilities by means of open-loop forcing at non-resonant
frequencies is attractive because neither a dynamic sensor signal nor a signal processor is …

Using external off-resonance forcing synchronized with the self-excited oscillation system is
a primary method for the open-loop control of thermoacoustic instability. Current studies …

This paper describes the application of active, open loop, control in effective damping of
severe (ie, peak to peak pressure amplitudes of up to 35 psi relative to a mean combustor …

Analysis of combustion instability has traditionally been based on the assumption that linear
coupling among acoustic modes is insignificant. While this is reasonable when one is …

This paper deals with the generation of new peaks in the pressure spectrum in controlled
combustors in experimental investigations of active control of thermoacoustic instabilities …

Passive control of combustion instabilities is explored in the case of systems featuring a
collection of premixed flames. The method devised in this research differs from the general …

The second part of the investigation dealt with control of low frequency symmetric instabili: ty
and high frequency helical instability by secondary fuel injection in a pilot flame.+ dding a …

This paper describes a study of open loop control of combustion instability employing
harmonic fuel injection rate modulation at a non-resonant frequency. It's shown that this …

Over the past decade, active control has been investigated in combustion systems as a
means of preventing thermoacoustic instabilities from degrading the system performance …

Triggering, frequency shifting, mode switching and hysteresis are commonly encountered
during self-sustained oscillations in combustors. These mechanisms cannot be anticipated …