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 …

This paper describes the application of active, open loop, control in effective damping of
severe combustion instabilities in a high pressure (ie, around 520 psi) gas turbine …

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 …

A number of recent articles have demonstrated the use of active control to mitigate the
effects of combustion instability in afterburner and dump combustor applications. In these …

A number of recent articles have demonstrated the use of active control to mitigate the
effects of combustion instability in afterburner and dump combustor applications. In these …

Described are sub-scale tests that successfully demonstrate active feedback control as a
means of suppressing damaging combustion oscillations in natural-gas-fueled, lean-premix …

Combustion dynamics is a prominent problem in the design and operation of low-emission
gas turbine engines. Even modest changes in fuel composition or operating conditions can …

Described are sub-scale tests that successfully demonstrate active feedback control as a
means of suppressing damaging combustion oscillations in natural-gas-fueled, lean-premix …

A dual-loop feedback control system was devised to suppress bimodal instabilities in a
dump combustor. Two types of instabilities were tested: one involving two anharmonic …

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 …