3 papers
physics.flu-dyn2026
Scaling of the minimal energy for turbulence transition in pipe flow
Patrick Keuchel, Daniel Morón, Marc Avila
Predicting the transition of turbulence in pipe flow remains a fundamental problem in fluid dynamics. We use a variational approach to compute nonlinear optimal perturbations to th…
physics.flu-dyn2026
Stretching by outer eddies sets the turbulent breakup rate of drops and bubbles
Daniel Morón, Ianto Cannon, Alberto Vela-MartÃn +1
Fragmentation of drops and bubbles in turbulence controls interfacial area generation, mixing, and transport in environmental and engineering flows. The nonlinear coupling between…
physics.flu-dyn2025
Turbulent puffs in transitional pulsatile pipe flow at moderate pulsation amplitudes
Daniel Morón, Marc Avila
We show that, in the transitional regime of pulsatile pipe flow, at moderate-to-high amplitudes 0.5 < A < 1, the first long-lived turbulent structures are localized and take the fo…