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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-dyn2022
A sparsity-promoting resolvent analysis for the identification of spatiotemporally-localized amplification mechanisms
Barbara Lopez-Doriga, Eric Ballouz, H. Jane Bae +1
This work introduces a variant of resolvent analysis that identifies forcing and response modes that are sparse in both space and time. This is achieved through the use of a sparse…
physics.flu-dyn2022
Wavelet-based resolvent analysis for statistically-stationary and temporally-evolving 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. This allows resolvent analysis to be extended to turbu…