2 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-dyn2025
Nonlinear optimal perturbation growth in pulsatile pipe flow
Patrick Keuchel, Marc Avila
Pulsatile fluid flows through straight pipes undergo a sudden transition to turbulence that is extremely difficult to predict. The difficulty stems here from the linear Floquet sta…