Aleksey Alekseev
Published 2016-03-21Version 1
The frequency estimation from the Koopman eigenvalues (phase angles) obtained via Dynamic Mode Decomposition (DMD) is addressed. Since the calculations of the frequencies from the phase angles are nonunique, the modifications of DMD for uniqueness restoration are considered. The nonlinear oscillating mode of supersonic jet, impinging the flat plate, is used as a toy problem.
A Parametric and Feasibility Study for Data Sampling of the Dynamic Mode Decomposition: Spectral Insights and Further Explorations
De-Biasing the Dynamic Mode Decomposition for Applied Koopman Spectral Analysis
The relationship between viscoelasticity and elasticity
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