Lean premixed combustors produce lower NO x emissions, but are particularly prone to damaging combustion instabilities. Active control can be used to stabilize combustion instabilities. So far model-based control strategies have tended to focus on longitudinal rather than annular combustors, even though many gas turbines have annular geometries. In this work, a computational thermoacoustic model is used to simulate unstable annular combustors, providing a platform on which to develop and test control strategi…
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