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Thermoacoustic instability occurs in many practical combustion systems. These systems are non-normal and associated with transient growth of acoustic disturbances. If the transient growth is large enough, then thermoacoustic instability may be triggered. In this work, transient energy growth analysis of a thermoacoustic system with a choked outlet is conducted. The effect of the choked boundary is...
Many aero-engine and gas turbine combustion systems are in choked configuration. These combustors are more prone to thermoacoustic instability. Thus there is a need to characterize and predict the stability behaviors of the choked systems. In this work, stability analysis of both longitudinal and circumferential eigenmodes in a thermoacoustic system with a choked outlet is performed via two different...
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