# TurtLES: A Large-Scale Benchmark for Turbulent 3D Neural PDE Surrogates > Source: > Published: 2026-11-13 20:00:07+00:00 Machine-learning surrogates are increasingly used to accelerate computational fluid dynamics, yet progress is limited by the lack of benchmarks capturing realistic, time-dependent turbulent flows. We introduce TurtLES, a 14 TB dataset of 3D turbulent cylinder wakes in the shear-layer transition regi