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physics.flu-dyn2025
Transient growth and nonlinear breakdown of wavelet-based resolvent modes in turbulent channel flow
Eric Ballouz, Scott T. M. Dawson, H. Jane Bae
We study the effectiveness of the time-localised principal resolvent forcing mode at actuating the near wall cycle of turbulence. The mode is restricted to a wavelet pulse and comp…
physics.flu-dyn2024
Wavelet-based resolvent analysis of non-stationary flows
Eric Ballouz, Barbara Lopez-Doriga, Scott T. M. Dawson +1
This work introduces a formulation of resolvent analysis that uses wavelet transforms rather than Fourier transforms in time. Under this formulation, resolvent analysis may extend…
physics.flu-dyn2024
Sparse space-time resolvent analysis for statistically-stationary and time-varying flows
Barbara Lopez-Doriga, Eric Ballouz, H. Jane Bae +1
Resolvent analysis provides a framework to predict coherent spatio-temporal structures of largest linear energy amplification, through a singular value decomposition (SVD) of the r…