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physics.flu-dyn2026
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-dyn2026
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-dyn2024
Towards High Resolution Real-Time Optical Flow Particle Image Velocimetry
Juan Pimienta, Jean-Luc Aider
Particle Image Velocimetry (PIV) is the most commonly used optical technique for measuring 2D velocity fields. However, improving the spatial resolution of instantaneous velocity f…