Case study: fin inserts for a gas-to-jet reactor
Fischer-Tropsch synthesis turns natural gas into liquid fuel inside catalyst-filled tubes. The reaction's heat output roughly doubles every 10 K, so a tube that can't shed heat runs away. The task: design aluminium fin inserts that keep the catalyst cool while leaving as much room for it as possible.
A design the model never saw
A 4.3 inch tube with 17 branched fins, held out of training. Drag to compare. The prediction is within 0.23 K RMS and never more than 0.64 K off.
33×
Faster per design: 0.35 s against 11.7 s for OpenFOAM. Median of six designs on one Apple M1.
0.31 K
Median field error across 860 held-out simulations.
97.9%
Held-out simulations correctly classified as stable or runaway.
Searching the design space
A 2,200-design search with a finite-element solver found tapered, alternating fins with about 2% more room for catalyst than the best straight fins at the same stability margin. Screening that many designs takes:
Projected from the measured per-design times, on one machine.