FY! Fluid Dynamics

Improving Turbulence Models

Researchers have introduced a new sub‑scale turbulence equation derived via an equation‑discovery tool, targeting the small‑scale dynamics that large‑eddy simulation (LES) typically approximates. By running a full, high‑fidelity turbulent flow simulation and matching its output against a library of over 900 candidate forms, the tool identified a physically consistent, computationally stable expression. The resulting equation can be analytically linked back to fundamental fluid‑dynamic principles, promising more accurate LES without prohibitive cost. This breakthrough could streamline oceanic and atmospheric forecasting models.