The Well

License: Per subset (mostly CC-BY / code MIT) · Updated 2026-01-15

The Well, released by Polymathic AI, contains physics simulation data across fluid, plasma, climate, materials and more - about 15 TB. It provides a unified PyTorch data interface and pretrained baselines, and is the flagship benchmark for training Physics Foundation Models.

Use cases: Training cross-domain neural operators / surrogate models; evaluating generalization across multiple physical laws.

Tags: MultiphysicsBenchmarkPyTorchHF Streaming
Related entries
  • PDEArena · Microsoft Research's open-source PDE benchmark suite with differentiable solvers
  • PDEBench · Large-scale PDE benchmark covering heat, advection-diffusion and fluid dynamics
  • TIDE · 2026 3D turbulent DNS benchmark with 5 tasks and controlled generalization split
  • CFDBench · Multiphysics benchmark for computational fluid dynamics covering internal/extern
  • TU Delft Turbulent Wake Dataset · Classic experimental & simulation dataset of turbulent wakes/cavity flows from T