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physics.flu-dyn2026
Free-surface curvature and its relation to subsurface turbulence
Daniel J. Ruth, Filippo Coletti
The free surface atop a turbulent liquid flow is deformed by the underlying fluid motion, with the turbulence imprinting its geometry on the surface. Here we develop a theoretical…
physics.flu-dyn2024
Structure and energy transfer in homogeneous turbulence below a free surface
Daniel J. Ruth, Filippo Coletti
We investigate the turbulence below a quasi-flat free surface, focusing on the energy transport in space and across scales. We leverage a large zero-mean-flow tank where homogeneou…