2024
DOI: 10.1115/1.4066149
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Dynamical Systems Characterization and Reduced Order Modeling of Thermoacoustics in a Lean Direct Injection Hydrogen Combustor

Ankit D. Kumar,
Chinonso Ezenwajiaku,
Ramanarayanan Balachandran
et al.

Abstract: In this study, the thermoacoustic instabilities of partially premixed hydrogen flames in a lean direct injection (LDI) multi-cluster combustor are characterised using dynamical systems theory. The combustor is operated at a range of bulk velocities (30 - 90 m/s) and equivalence ratios(0.2-0.6), and time-resolved pressure oscillations and integrated OH* chemiluminescence measurements were taken. The thermoacoustic system reveals a variety of dynamical states in pressure such as period-1 Limit Cycle Oscillation … Show more

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