Graph neural network CFD surrogate

Airfoil design at the speed of inference.

AeroSurrogate Studio replaces hours of RANS simulation with a MeshGraphNet surrogate trained on AirfRANS. Shape an airfoil, read the full flow field and aerodynamic coefficients right away, then let an optimizer search thousands of designs.

Built onAirfRANSNVIDIA PhysicsNeMoPyTorch Geometric
NACA 4412 · α 6° · U∞ 50 m/sCp field
1,000
RANS simulations in the AirfRANS training corpus
~180k
mesh nodes per case, predicted in a single pass
4
flow fields per prediction: Ux, Uy, p and νt
15
message-passing layers in the MeshGraphNet processor
How it works

From five numbers to a full RANS flow field

The surrogate learned the mapping from mesh geometry and inflow to the converged k-ω SST solution. For a new design it needs only a mesh, and one comes from morphing the closest training case.

  1. 01

    Parameterize

    NACA 4- or 5-digit parameters, angle of attack and inflow speed define a design.

  2. 02

    Morph a mesh

    The nearest AirfRANS training mesh (~180k cells) is morphed onto the new shape and quality-checked.

  3. 03

    Predict the flow

    A MeshGraphNet passes messages across the mesh graph and predicts Ux, Uy, p and νt at every node.

  4. 04

    Integrate forces

    Surface pressure and wall shear integrate to Cl, Cd and Cm, with ensemble uncertainty.

  5. 05

    Optimize

    Evolutionary search calls the surrogate thousands of times to find better shapes.

Honest by design

A surrogate that tells you when not to trust it

Learned models are fast but can be confidently wrong outside their training data. Every prediction here carries the signals an engineer needs to judge it.

  • Ensemble uncertainty
    Several independently trained models; their spread becomes the ±σ on each coefficient, and optimization can penalize it.
  • Training-envelope checks
    Each input is checked against the training distribution, with explicit warnings when a prediction extrapolates.
  • Mesh-quality gate
    Morphed meshes are checked for inverted cells and near-wall resolution before inference.
  • Physics constraints
    No-slip is enforced exactly at the wall; physics-residual diagnostics accompany each prediction.

Start designing

Pick a classic NACA section, or start from scratch.