COMPRESSIBLE-FLOW MACHINE LEARNING
Task-preserving shock and vortex-core segmentation
Explore the multistructure movie pipeline: learned shock fronts and transition bands, vortex-core candidates, wake/shear, and expanding-flow regions. Density schlieren is shown on the left and detected structures on the right.
Mach 3 diamond airfoil, α = 40°, Re = 10,000 · t = 6 · Movie S9 pipeline
Interpretation
These figures use the same saved predictions as Movies S9 and S10 in the linked release. A learned local shock-front model and fixed validation-selected front extraction are combined with the retained learned core/wake branches and the PM-v4 expansion-region branch. Purple marks core candidates, green marks wake/shear, and blue marks expanding flow. The blue region is not a validated centred Prandtl–Meyer fan. Some small internal candidates and missed structures remain; these inspected development examples do not establish independent accuracy.
The three HJ checkpoints in the linked model repository belong to the separate task-preservation control experiment. Its three-seed weak-reference shock Dice is 0.936 ± 0.004 for airfoils and 0.939 ± 0.024 for cylinders; these scores are not assigned to the multistructure movie pipeline shown above. The model card gives the complete results and limitations.