Study on Nonlinear Dynamics Using the State Space of Combustion Oscillation in a Rocket Combustor
Fumiya ARAI,
Kazuki IEMURA,
Masanori SAITO
et al.
Abstract:Combustion oscillation in a rocket combustor was analyzed using a Variational Auto-Encoder (VAE). Dimension reductions were conducted on various physical quantities ( pA, _ q 0 , etc.) in the combustor. Orthogonal modes were obtained using proper orthogonal decomposition for the output of VAE. Pumping and damping regions in the combustor were identified using the distribution of the Rayleigh Index for each mode. Three characteristic modes were identified that supply energy to the oscillation. A phase plane was… Show more
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