Abstract: Amplitudedependent flame transfer functions, also denoted as flame describing functions, are valuable tools for the prediction of limitcycle amplitudes of thermoacoustic instabilities. However, the effects that govern the ...

Abstract: Equivalence ratio fluctuations are known to be one of the key factors controlling thermoacoustic stability in lean premixed gas turbine combustors. The mixing and thus the spatiotemporal evolution of these perturbations ...

Abstract: The current paper investigates the nonlinear interaction of the flow field and the unsteady heat release rate and the role of swirl fluctuations. The test rig consists of a generic swirlstabilized combustor fed with natural ...