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Showing 2025 · physics.flu-dynShow all
3 papers · 2 filters
physics.flu-dyn2025
Rare-event detection in a backward-facing-step flow using live optical-flow velocimetry: observation of an upstream jet burst
Juan Pimienta, Jean-Luc Aider
Rare and extreme events in turbulent flows play a critical role in transport, mixing and transition, yet are notoriously difficult to capture experimentally. Here we report, to our…
physics.flu-dyn2025
High Resolution and High-Speed Live Optical Flow Velocimetry
Juan Pimienta, Jean-Luc Aider
Particle Image Velocimetry (PIV) typically relies on cross-correlation,which makes it difficult to obtain instantaneous velocity fields that are both spatially dense and available…
physics.flu-dyn2025
Waviness and self-sustained turbulence in plane Couette-Poiseuille flow
Manuel Etchevest, Pablo Dmitruk, Supriya Karmakar +3
Direct numerical simulations of a Couette Poiseuille flow were performed near the transition to turbulence to investigate the nonlinear relationship between streak waviness and rol…