physics.flu-dyn · 2026-07-15 · No. 54

Fluid Dynamics, 2026-07-15.

1 new papers in physics.flu-dyn. Titles, authors, abstracts. Links to arXiv. Want this in your inbox every morning? Subscribe →

01 — The papers

1 entries
  1. 01

    Gradient-free learning of a closed-loop wall controller for turbulent drag reduction

    Giorgio Maria Cavallazzi, Miguel Pérez Cuadrado, Alfredo Pinelli

    physics.flu-dyn · cs.LG

    Closed-loop wall control learnt by multi-agent reinforcement learning can lower skin-friction drag in turbulent channels, but these gradient-based policies are trained on small periodic boxes and exhibit reduced performance when carried over to a larger domain. We recently showed that such policies are also prone to saturated bang-bang actuations that collapse into standing streamwise waves whose scale is set by the computational box rather...

    arxiv.org/abs/2607.12626 · PDF

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