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The coupling between unsteady heat release and acoustic perturbations can lead to self-sustained thermoacoustic oscillations, also known as combustion instability. When such combustion instability occurs, the pressure oscillations may become so intense that they can cause engine structural damage and costly mission failure. Thus there is a need to understand the coupling physics between acoustic waves...
Self-excited thermoacoustic oscillations, also known as combustion instability is generated by the coupling between unsteady combustion and acoustic perturbations. If such combustion instability occurs, then pressure fluctuations may become so intense that they can cause overheating and/or engine structural damage. Thus it is necessary to understand the dynamic coupling physics between acoustic perturbations...
Thermoacoustic instability occurs in many modern combustion systems. It most often arises due to the coupling between unsteady heat release and acoustic waves. Transient energy growth of acoustic disturbances could trigger thermoacoustic instability in a non-normal combustion system. In this work, transient energy growth analysis of a modelled choked combustor with a gutter confined is conducted....
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