W Polifke - Progress in Energy and Combustion Science, 2020 - Elsevier
The unsteady response of a flame to acoustic or flow perturbations plays a crucial role in thermoacoustic combustion instability. The majority of studies on this subject presents and …
L Magri - Applied Mechanics Reviews, 2019 - asmedigitalcollection.asme.org
In a thermoacoustic system, such as a flame in a combustor, heat release oscillations couple with acoustic pressure oscillations. If the heat release is sufficiently in phase with the …
T Emmert, S Bomberg, S Jaensch, W Polifke - Proceedings of the …, 2017 - Elsevier
Premixed flames are velocity sensitive, ie, they react to a velocity perturbation at the burner mouth, say, with fluctuations in heat release rate. Unsteady heat release generates acoustic …
A Ghani, W Polifke - Proceedings of the Combustion Institute, 2021 - Elsevier
This conceptual numerical study explores a possible strategy for control of unstable intrinsic thermoacoustic (ITA) modes. Control of the ITA feedback loop has not been discussed yet …
We present two MATLAB toolboxes, provided as open-source code, that expand the capabilities of the Control System Toolbox to large-scale models. sss allows the definition …
M Meindl, CF Silva, W Polifke - Combustion and Flame, 2021 - Elsevier
This work demonstrates that a hybrid approach for linear thermoacoustic stability analysis that combines the Linearized Navier–Stokes Equations (LNSE) with a global Flame Transfer …
A Avdonin, M Meindl, W Polifke - Proceedings of the Combustion Institute, 2019 - Elsevier
In this paper, the dynamics and thermoacoustic stability of a laminar premixed flame are analyzed using a linearized reactive flow (LRF) solver. The LRF solver is based on …
This paper investigates low-frequency thermoacoustic instabilities of a turbulent spray flame, a phenomenon known as 'rumble'. Based on experimental data, a network model analysis is …
S Jaensch, M Merk, EA Gopalakrishnan… - Proceedings of the …, 2017 - Elsevier
This paper proposes and compares two nonlinear time-domain models of self-excited thermoacoustic oscillations of laminar premixed flames. Both models are hybrid …