Fix unsteady testcase configs and add regression tests by Sahilll10 · Pull Request #2755

Fix unsteady testcase configs and add regression tests by Sahilll10 · Pull Request #2755 · su2code/SU2

- Add TIME_DOMAIN=YES and TIME_ITER=100 to three unsteady configs
  that were silent running as single steady iterations
- Fix SOLVER=RANS in turb_NACA64A010.cfg
- Remove deprecated EXT_ITER from all three configs
- Add SCREEN_OUTPUT to all three configs for regression output
- Register pitching_naca64a010_rans, pitching_naca64a010_euler,
  and plunging_naca0012 in serial_regression.py

Fixes su2code#2524

mentioned this pull request

Mar 11, 2026

- Reduce INNER_ITER from 2000/110/1000 to 30/20/50 for RANS/Euler/Plunging
- Switch LINEAR_SOLVER_PREC from LU_SGS to ILU for faster convergence
- Raise CFL from 4/10 to 200 for RANS and Euler cases
- These settings achieve ~2 orders residual drop in 20 inner iterations
  for RANS and Euler, consistent with pcarruscag review feedback

- RANS: CFL=200, INNER_ITER=30
- Euler: CFL=200, INNER_ITER=20
- Plunging: CFL=1.0, INNER_ITER=50
- test_vals regenerated from clean run with new settings

Copilot AI review requested due to automatic review settings

March 22, 2026 19:53

- Revert plunging LINEAR_SOLVER_PREC to LU_SGS (ILU caused divergence on CI)
- RANS and Euler test_vals updated to CI Docker computed values
- RANS CI values: [-2.474001, -6.039495, 0.031041, 0.053671]
- Euler CI values: [-1.864773, 3.545935, 0.035685, 0.035843]
- Plunging LU_SGS values: [-5.248321, 0.372499, 2.100860, 6.212394]