Omar SobhandClaude Opus 5.5 ec0e4f1573 b4am: prescribed b4 motion on the overset (modal added mass / fluid damping instrument) ...

- tests/fsi2_b4_added_mass.rs: #[ignore] instrument fsi2_b4_prescribed_mode. The flag's wetted
  surface moves as q(t) phi (phi from B4_MODE, M-orthonormal in-vacuo b4), q = q0 r(t) sin(w t);
  per step the CSV records q, qd, qdd and the generalised fluid force sum_k f_k . phi_k from the
  march's own nodal load (sample_load); optional per-node load CSV. B4_DT overrides the fluid step.
- fsi2_harness/overset.rs: RTX_FSI2O_STILL=1 turns the inflow off (still fluid) while keeping
  u_mean for the CFL step and the solvers' reference flux. Unset = unchanged; gate: a short
  prescribed replay (fsi2_overset_prescribed_motion, ny 62, 185 steps) byte-identical to main.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

2026-09-25 10:23:21 -05:00

..

fsi2_harness

b4am: prescribed b4 motion on the overset (modal added mass / fluid damping instrument)

2026-09-25 10:23:21 -05:00

fsi2_b4_added_mass.rs

b4am: prescribed b4 motion on the overset (modal added mass / fluid damping instrument)

2026-09-25 10:23:21 -05:00

fsi2_flag_modes.rs

rtx-fsi: FSI2 flag in-vacuo modal instrument (smodes, test-only, #[ignore])

2026-09-25 03:22:50 -05:00

fsi2_interface_noise.rs

rtx-fsi: the interface noise probe reads RTX_FSI2_MG_DEVICE (the device V-cycle's regime gate)

2026-09-16 01:24:14 -05:00

fsi2_overset_plane.rs

rtx-cfd/rtx-fsi PERF-2 P3-iii K-stream mode: each lane thread's device operator lives on its own CUDA stream (no rendezvous; set_plane_streams, RTX_FSI2O_PLANE_MODE=streams default | batch); stream-mode unit test digit-identical to the solo apply

2026-09-17 06:40:43 -05:00

fsi3_ecsw_offline.rs

rtx-fea: reduced Newmark (mor::dynamic) + the phase-4a offline replay — the ≥10x gate is REFUTED by measurement at the validated resolution

2026-08-30 07:07:49 -05:00

piston_added_mass.rs

rtx-cfd + rtx-fsi: the added-mass piston — partitioned FSI on the real ALE fluid

2026-08-20 06:10:13 -07:00

transfer_curved_edge.rs

rtx-fsi + rtx-cfd + rtx-fea: FSI1 — the coupled cylinder and flag

2026-08-20 17:22:27 -07:00

turek_hron_fsi1.rs

rtx-cfd/rtx-fsi: every EmbeddedParameters literal carries the smoother field (all test targets of both crates compile)

2026-09-15 23:50:19 -05:00

turek_hron_fsi2_overset.rs

S2-9: the flag on the recorded FSI2 kinematics — fsi2_overset_dump_centreline (rtx-fsi) exports the saved instants' wetted-node d/ḋ as a centreline per knot (clamp + 70 columns); tests/embedded3_flag_kinematics (cubic Hermite through the knots with their velocities, t = 0 at RTX_E3_FLAG_KIN_T0, a 0.5 s ramp from the undeflected line, arc-length interpolation along the stations) drives both the 3D/slab flag (RTX_E3_FLAG_KINEMATICS, both in-plane surface-velocity components, the record's period) and the 2D reference; the analytic paths unchanged (same tuples)

2026-09-20 21:27:26 -05:00

turek_hron_fsi2.rs

rtx-cfd/rtx-fsi: overset A-P0 GATED + M1 precision probe — curvilinear collocated PISO: relative-reduction pressure stop (the absolute stop floored |du/dt| at 2e-4 on 64²), line-implicit-n sign fix, adjustPhi; gates: Cartesian reduction 1.37–1.40x the staggered error at orders 0.83/0.90; skewed stretched periodic annulus Stokes orders 2.30/2.06 (explicit and line-implicit), upwind 1.08/0.80; Poiseuille exact to 1e-9 on Cartesian and affine-sheared periodic channels (both diffusion variants), varying-skew channel order 2.02 (v 1.9), cell mass 1e-14; divergence ≤ 1e-11 relative every step; snapshot/restore bit-identical. M1: poisson.rs multigrid hierarchy generic over MgScalar (f32/f64), f64 CG keeps its own fine level; MgPrecision on MultigridParameters/EmbeddedParameters/PisoParameters, set_poisson_precision, harness RTX_FSI2_POISSON_F32 (march + noise probe, printed marker); f64 arm bit-identical in vivo (FSI2 default line-for-line with 08-31), f32 arm holds the noise floor and stall pins and the FSI2 band; poisson_equivalence f32 arm

2026-09-04 12:40:43 -07:00

turek_hron_fsi3.rs

rtx-cfd/rtx-fsi: overset A-P0 GATED + M1 precision probe — curvilinear collocated PISO: relative-reduction pressure stop (the absolute stop floored |du/dt| at 2e-4 on 64²), line-implicit-n sign fix, adjustPhi; gates: Cartesian reduction 1.37–1.40x the staggered error at orders 0.83/0.90; skewed stretched periodic annulus Stokes orders 2.30/2.06 (explicit and line-implicit), upwind 1.08/0.80; Poiseuille exact to 1e-9 on Cartesian and affine-sheared periodic channels (both diffusion variants), varying-skew channel order 2.02 (v 1.9), cell mass 1e-14; divergence ≤ 1e-11 relative every step; snapshot/restore bit-identical. M1: poisson.rs multigrid hierarchy generic over MgScalar (f32/f64), f64 CG keeps its own fine level; MgPrecision on MultigridParameters/EmbeddedParameters/PisoParameters, set_poisson_precision, harness RTX_FSI2_POISSON_F32 (march + noise probe, printed marker); f64 arm bit-identical in vivo (FSI2 default line-for-line with 08-31), f32 arm holds the noise floor and stall pins and the FSI2 band; poisson_equivalence f32 arm

2026-09-04 12:40:43 -07:00