86 Commits

Include renames

Author	SHA1	Message	Date
Omar SobhandClaude Opus 5.5	171da41ed1	Merge r8a-span-uniform-fsi (R8-a: the first coupled 3D FSI, span-uniform; default-off). Merge fixes: the load-route observers of R8-a (to_load_sink) and R8-c (sink(LoadKind, …)) both kept on the same summands (both inert by default); the harness's DeviceSdf gains plate: None (R8-c's new field). Merged-tree gate: slab ny 62 default / BAND_CHECK / all-host / uniform plate byte-identical to main's base; device suites 2/2, 3/3; the coupled harness reproduces R8-a's recorded slab march row for row (478 rows) ... Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>	2026-09-25 21:21:40 -05:00
Omar SobhandClaude Opus 5.5	11fff74c3d	R8-a harness: RTX_E3FSI_RESTORE_CHECK (re-run the accepted candidate from the snapshot) ... Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>	2026-09-25 18:15:42 -05:00
Omar SobhandClaude Opus 5.5	0f386df871	R8-a harness: RTX_E3FSI_LOAD_PLANES (the load route on the n mid planes; cost knob, whole span by default) ... Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>	2026-09-25 18:14:55 -05:00
Omar SobhandClaude Opus 5.5	9867a8b831	R8-a harness: save/load of the coupled state (continue on the same grid, or extrude the slab onto the full duct) ... Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>	2026-09-25 18:14:16 -05:00
Omar SobhandClaude Opus 5.5	12a27c6fca	R8-a: span-uniform coupled FSI2 on embedded3 — DeviceStep snapshot/restore, operator-route load sink, harness fsi2_embedded3.rs ... - embedded3 DeviceStep::snapshot/restore (step/device/snapshot.rs): the start-of-step device fields + the moving body's host records; a restore rebuilds the R6 persistent geometry/classification, the predictor tables, the hierarchy and the guess basis. Only called by the new harness (existing paths untouched). - exchange::set_load_sink: every contribution of the operator load route (p W, wall shear, diffusive/convective exchange) with position/component/part; None by default, the routes' sums unchanged (slab ny 62 CSV byte-identical to r6_1/base_slab62.csv). - rtx-fsi feature cuda (= rtx-cfd/cuda) and tests/fsi2_embedded3.rs: the 2D rtx-fea flag (35x2 Quad8, TL, Newmark 0.7) drives the capsule's centreline per coupled step; the route's contributions are distributed onto the wetted nodes per unit span; Aitken subiterations each re-run the fluid step from the snapshot. Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>	2026-09-25 18:11:27 -05:00
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
Omar SobhandClaude Opus 5.5	66aab2833c	rtx-fsi: FSI2 flag in-vacuo modal instrument (smodes, test-only, #[ignore]) ... fsi2_flag_modes_dump writes the march's structure operators (TL SVK tangent at u = 0, plane strain; consistent mass; root-clamped free DoFs) per mesh for an outside eigen-solve; fsi2_flag_free_vibration releases the march's NonlinearDynamicStepper from a mode shape at a given Newmark gamma and records the probe's uy(t). Nothing in the march changes. Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>	2026-09-25 03:22:50 -05:00
Omar SobhandClaude Opus 5.5	e80b122854	R4-m: RTX_FSI2O_NODE_CSV — per-node accepted load and displacement along the flag every coupled step ... Each wetted node's (dx, dy, fx, fy) grouped bottom / tip / top (sidecar <path>.nodes.csv: group, node, reference x, y, arc length) plus the centreline uy at s = 1/4 (mean of the two straddling nodes) and 1/2. Default off; gate on the R4-l line slice 6.0 -> 6.2 s (CPU V-cycle, floor 7.5e-8, rtol 1e-3): main vs branch knob-off vs knob-on march CSV and step CSV byte-identical (md5 70dcf484..., dd535386...); the node sums equal the step CSV's fx_nodal / fy_nodal. Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>	2026-09-24 22:36:17 -05:00
Omar SobhandClaude Fable 5.1	501b45f9d0	R4-i + R5 design pass: RTX_FSI2O_REGEN_ONCE (one patch regeneration per coupled step; dies at step 0 — the registered test is void), the step CSV's subit/dres_y/dres_norm/fx_nodal/fy_nodal columns; the cut predictor's per-face term probe (enable_term_probe) and the curved instrument's exact side/wall viscous integrals — the static convex wall's flat residual is the viscous closure's first-order relative accuracy on O(1/h) fluxes ... Co-Authored-By: Claude Fable 5.1 <[email protected]>	2026-09-22 07:39:54 -05:00
Omar SobhandClaude Fable 5.1	f5735fdeaa	R4-d: the dt²-scaled floor uses the COUPLED step (the first form scaled with the fluid substep); ny 62 check identical to the 3e-5 run ... Co-Authored-By: Claude Fable 5.1 <[email protected]>	2026-09-21 21:05:38 -05:00
Omar SobhandClaude Fable 5.1	457c6fa88d	R4-d: RTX_FSI2O_TOL_FLOOR_DT2 — the coupling floor scaled with (dt/3.44e-4)² (the FSI3 force spikes are the displacement floor's acceleration noise; R4-c held the scaling at ny 82) ... Co-Authored-By: Claude Fable 5.1 <[email protected]>	2026-09-21 21:02:11 -05:00
Omar SobhandClaude Fable 5.1	847502f7c3	R2-b: the added-mass pins print the confined target (potential flow 1.071 in the unit box + Stokes 0.064 = 1.135); R4 probe: RTX_FSI2O_STEP_CSV — every step's raw force with the accepted fluid step's overlap defects (the march CSV carries 10-step medians) ... Co-Authored-By: Claude Fable 5.1 <[email protected]>	2026-09-21 20:22:15 -05:00
Omar SobhandClaude Fable 5.1	f1714fb926	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) ... Co-Authored-By: Claude Fable 5.1 <[email protected]>	2026-09-20 21:27:26 -05:00
Omar SobhandClaude Fable 5.1	7e135893a2	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 ... Co-Authored-By: Claude Fable 5.1 <[email protected]>	2026-09-17 06:40:43 -05:00
Omar SobhandClaude Fable 5.1	95ffde9591	rtx-cfd/rtx-fsi PERF-2 P3-iii: the MarchPlane — lane-table V-cycle kernels (ml_*), the batched apply over K lanes' own operators, the plane rendezvous inside the CG's preconditioner (lane thread-local, CG guard), set_plane_lane/plane_counters; the fsi2_overset_plane driver (K lane threads, one process); G-P0 unit tests: K distinct operators batched = solo apply bit for bit, uneven lanes served exactly ... Co-Authored-By: Claude Fable 5.1 <[email protected]>	2026-09-16 17:03:51 -05:00
Omar Sobh	3fd4fb7b8c	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
Omar SobhandClaude Fable 5.1	fc556f8a88	PERF-2 P3-ii: the device V-cycle as the CG's preconditioner — poisson/device.rs (one CUDA runtime per process, persistent per-operator buffers, the mg_vcycle.cu kernels at K = 1; upload r, run the V-cycle, download z; the f64 CG unchanged), MultigridParameters::device, Prepared holds the device hierarchy, the CG driver destructures the prepared operator instead of cloning it; EmbeddedPisoSolver::set_poisson_device, overset pass-through, harness knob RTX_FSI2O_MG_DEVICE=1; export_levels factored out; the quarantine's dangling cfg attribute fixed ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL	2026-09-16 01:16:55 -05:00
Omar SobhandClaude Fable 5.1	8c130c55c8	PERF-2 P2-c: RTX_FSI2O_INNER_STOP knob — the background Poisson's inner stop as a multiple of the Schwarz tolerance (default 0.1; the band-gated ladder on the CG iteration count) ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL	2026-09-16 00:50:52 -05:00
Omar SobhandClaude Fable 5.1	7f144e0005	PERF-2 P2: the red-black colour maps, the residual and the V-cycle's per-level maps on rayon threads (MultigridParameters::threads; RTX_THREADS in the harness; rtx_cfd::configure_threads) — each colour's values computed from the unchanged other colour into a scratch and written back, the L1 sum in the serial order: bit-identical to the serial red-black (pin: 4 right-hand sides at 4 threads); the coarsest level stays serial; no effect on the lexicographic regime ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL	2026-09-15 23:59:29 -05:00
Omar Sobh	364766a54a	rtx-fsi: the interface noise probe reads RTX_FSI2_MG_RB itself (its solver is built outside the march's knob site; the first red-black probe run was vacuous)	2026-09-15 23:53:57 -05:00
Omar Sobh	f9d38bee55	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
Omar Sobh	43d5abde8d	rtx-fsi harness: the embedded harness's EmbeddedParameters carries the smoother field (the previous commit did not compile the rtx-fsi tests)	2026-09-15 23:49:31 -05:00
Omar SobhandClaude Fable 5.1	cb5771fa71	PERF-2: red-black symmetric Gauss–Seidel smoother behind a knob (MgSmoother::RedBlack; default lexicographic = the recorded regime, bit-identical) — red/black cell lists per level, the symmetric pair red,black,black,red, the operator cache keyed on the smoother; EmbeddedParameters::poisson_smoother, harness knobs RTX_FSI2O_MG_RB (overset) and RTX_FSI2_MG_RB (embedded, the noise probe); pin: solves the masked problem to the same stop, agrees with lexicographic to 2e-12, cached = uncached bit for bit ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL	2026-09-15 23:48:55 -05:00
Omar SobhandClaude Fable 5.1	1547d14ff1	PERF-2 P0-b: CG iterations per Poisson solve in the profile (ms per V-cycle) and sub-timers inside the patch regeneration (outline, hull + offset, ring projection, Winslow sweeps, respace, warm bookkeeping, mesh finalisation) ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL	2026-09-15 22:53:26 -05:00
Omar SobhandClaude Fable 5.1	172a26dee4	PERF-2 P0: intra-step profiler — StepTimers on the overset solver (RTX_PROFILE; overlap build / predictors / patch BiCGSTAB / background Poisson with its setup-vs-iterate split / round exchange / apply / end exchange), PoissonSolution carries setup_ns and iterate_ns, the harness times advance / restore / snapshot / load sampling / force / FEA predictor and prints the wall split of the coupled phase; no clock is read when profiling is off; the reclassified/step progress denominator fixed (was ×4) ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL	2026-09-15 22:25:52 -05:00
Omar SobhandClaude Fable 5.1	2d2fed7181	rtx-fsi harness: 'fixed' coupler (constant relaxation OMEGA0) for the P6-c Robin–Neumann test — at ω = 1 the candidate is the FEA's own output, so the Robin wall's previous-pass datum is the structure's traction at the candidate; design 2's FSI3 divergence is the datum's inconsistency under IQN's ω0 = 0.05 ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL	2026-09-15 19:22:36 -05:00
Omar SobhandClaude Fable 5.1	c3dbd5040a	P6-b design 2: the Robin wall on the patch's Inner side — RobinWall { alpha, datum } with the wall velocity u_s + (t_f − datum)/α (explicit, damped by the wall's own viscous gain μ/(α d)) and the compliant-wall pressure term |S| p'/α implicit in the projection (the added-mass operator in the fluid's own response); Dirichlet bit for bit when off; MMS pin on the skewed annulus (orders 2.46/2.13 at α = 10 and 100 μ/h, the Dirichlet values; a 1e12 wall reproduces Dirichlet to 2e-6); OversetPisoSolver::patch_mut; harness knob RTX_FSI2O_ROBIN_ALPHA with the previous pass's tractions as the datum, printed in the header ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL	2026-09-15 10:46:35 -05:00
Omar SobhandClaude Fable 5.1	c144a5f733	P6-b: the compensating load uses the candidate's own Newmark acceleration a(d) = (d − u_pred)/(β Δt²) (consistent with the relaxed candidate the fluid saw; cancels exactly at the fixed point) — the lagged structure-output acceleration of the first try made the loop slower (1.8 → 5.2 subit/step at α 0 → 2) ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL	2026-09-15 08:37:35 -05:00
Omar SobhandClaude Fable 5.1	a2086a59de	P6-b: the fictitious added mass for the partitioned loop — rtx-fea NonlinearDynamicStepper::set_added_lumped_mass (a lumped per-DOF mass in the Newmark inertial residual and effective tangent, never the consistent mass or the rest state; zero = the plain stepper bit for bit) with its pin (compensated step reproduces the plain step to 2.5e-9, uncompensated moves it 11 %); the FSI2 overset harness carries RTX_FSI2O_FICT_MASS=α (α × ρ_f π (c/2)² spread over the wetted nodes) and adds the compensating load M_f ü_k of the previous subiterate to every structure solve (predictor and passes), printed in the header ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL	2026-09-15 08:30:55 -05:00
Omar SobhandClaude Fable 5.1	e54729241d	fsi2 overset harness: RTX_FSI2O_CASE=FSI3 (the FSI3 constants with FEATFLOW level-4 references in the summary), RTX_FSI2O_SAVE_FROM (instants only from a time on — a dense last period for the viewer) ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01LzcjQX7tvgn87CQCyg9Cfr	2026-09-14 06:36:45 -05:00
Omar SobhandClaude Fable 5.1	415c32ab04	overset mesh: the flat-tip outline (P5-3 option B) — cylinder_flag_outline_deformed_tip / cylinder_flag_patch_deformed{,_from}_tip take the tip's corner radius (t = the recorded semicircle, bit for bit; smaller = the benchmark's flat face between corner arcs sampled at the wall spacing, point count fixed across the deformation, the tip's corners kept off the hull source); pins: corner t reproduces the recorded outline, the 2.5 mm outline has the exact area excess with no collapsed spacing, the O-grid builds straight and at ± 80 mm cold and warm at ny 41/62; harness knob RTX_FSI2O_TIP_CORNER (default 0.01) on the cold and warm builds, printed in both headers; pinned-toolchain fmt on touched crates ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01LzcjQX7tvgn87CQCyg9Cfr	2026-09-13 22:22:08 -05:00
Omar SobhandClaude Fable 5.1	7224521309	fsi2 overset harness: reference constants from FEATFLOW's FSI2 level-4 table (uy 1.24 ± 81.7 mm at 1.93 Hz, ux −14.87 ± 12.73, drag 215.18 ± 77.78, lift 0.87 ± 238.0) — the 2006 table's 80.6 / 2.0 was level 2 with the frequency rounded; the summary line prints the full reference ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01LzcjQX7tvgn87CQCyg9Cfr	2026-09-13 19:43:17 -05:00
Omar SobhandClaude Fable 5.1	5aa05f140d	fsi2 replay: RTX_FSI2O_MAX_ROUNDS knob (3) on the prescribed-motion instrument, printed in its header — the coupled march cannot run at a tighter Schwarz cap (release dies), so the fluid side of the rounds question is measured on the replay ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01LzcjQX7tvgn87CQCyg9Cfr	2026-09-13 19:00:02 -05:00
Omar SobhandClaude Fable 5.1	0645565bd8	fsi2 harness: RTX_FSI2O_FILLET knob (the outline's fillet radius, 5 mm = t/2 in every recorded run: a half-round tip and 5 mm root fillets vs the reference's sharp rectangle; printed in both headers) — P5-3's first problem-definition probe after the h-term was traced to the wake's strength on the background ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01LzcjQX7tvgn87CQCyg9Cfr	2026-09-13 01:38:45 -05:00
Omar SobhandClaude Fable 5.1	c63115053b	fsi2 harness: RTX_FSI2O_PATCH_STRETCH knob (the patch's across stretch, 4.0 in every recorded run; printed in both headers) — P5-3's wall-normal resolution test at fixed h: the rows ladder does not build (the overlap needs outer patch cells ≈ h/2 or larger), the stretch refines the wall cell 0.227h → 0.144h → 0.088h at 4/8/16 while the outer cells grow ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01LzcjQX7tvgn87CQCyg9Cfr	2026-09-13 00:16:20 -05:00
Omar SobhandClaude Fable 5.1	c7d2870580	fsi2 harness: RTX_FSI2O_BG_CONVECTION knob (tvd default / upwind) on the background, printed in both headers beside the patch's — the patch scheme was excluded as the h-term's carrier (upwind ladder +1.52 vs TVD +1.73 W/m from ny 41 to 62), the background's wake dissipation is the registered next probe ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01LzcjQX7tvgn87CQCyg9Cfr	2026-09-12 23:01:57 -05:00
Omar SobhandClaude Fable 5.1	ff7cc2d739	fsi2 harness: RTX_FSI2O_PATCH_CONVECTION knob (tvd default / upwind / none) on the overset patch, printed in the march's coupling header and the replay's PRESCRIBED header — P5-3's near-wake dispersion test on the ny 62 fixed-motion replay; harness files under the pinned toolchain's cargo fmt ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01LzcjQX7tvgn87CQCyg9Cfr	2026-09-12 21:18:03 -05:00
Omar SobhandClaude Fable 5.1	914d369efe	overset: the stamp-energy instrument (P5-3's energy-source measurement) — OversetResult gains stamp_energy (½ρ(u_stamped² − u_before²)·dx·dy summed over the fringe faces after the flux balance on a reclassification step) and reclass_energy (the faces touching a cell whose class changed); the replay CSV logs both plus the reclassified-cell count per step — the comparator showed the plate loads per unit motion agree with ours to ~10 %, so the discrepancy is our limit-cycle amplitude, an h-growing energy source, and the hole boundary's reclassification is the candidate ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-12 17:32:05 -05:00
Omar SobhandClaude Fable 5.1	aeb70eb507	prescribed-motion replay: per-step Schwarz rounds, convergence, background residual, patch divergence and mass defects in the CSV — so the next burst is seen forming ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-09 17:57:06 -07:00
Omar SobhandClaude Fable 5.1	1562b7cbb5	prescribed-motion replay: the fluid's power on the flag split face by face (normal vs tangential traction; root / middle / tip thirds) beside the nodal Σ F·ḋ, and replay instants (RTX_FSI2O_SAVE + SAVE_EVERY or SAVE_AT=t1,t2,… — the step that first reaches each time) for the per-region pressure audit at one physical instant across h ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-09 15:49:27 -07:00
Omar SobhandClaude Fable 5.1	f61c427b6d	P5-3 energy discriminator: prescribed motion on the overset fluid alone — fsi2_harness/replay.rs (a march's saved instants as cubic-Hermite kinematics with the saved velocities as slopes, the prescribed wall velocity the interpolant's exact derivative; a smooth ramp) with a knot/derivative pin, and fsi2_overset_prescribed_motion (RTX_FSI2O_REPLAY=dir: replay from RTX_FSI2O_REPLAY_T0 on RTX_FSI2O_LOAD's rigid state at any ny; per-step CSV of tip uy, drag, lift, the fluid's power on the flag Σ F·ḋ, wall flux vs area rate; window summary) — at a fixed motion, does the fluid's work per cycle grow with h the way the coupled amplitude ladder (91.2 → 94.8 → 98.0 mm) does? ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-09 13:13:59 -07:00
Omar SobhandClaude Fable 5.1	7e13d14e96	FSI2 overset harness: RTX_FSI2O_DT_SCALE scales the CFL-derived fluid step — P5-3's dt-convergence probe of the first-order Euler fluid steps (the band's placement is excluded: 94.0 mm at a 60 mm patch vs 94.8 at 40 mm; the s = 8 pair moved the amplitude 95 → 60 mm) ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-09 06:41:08 -07:00
Omar SobhandClaude Fable 5.1	75ab6e77b4	FSI2 overset march: print every coupling setting once (coupler, floor, rtol, stall accept, max subit, predictor, s, patch offset × rows) and add RTX_FSI2O_LOAD_SETTLE (rigid steps after a loaded state, clock put back; default 20) — P5-3 lost a day to the default floor 2e-4 against the overnight marches' 1e-6: at 2e-4 every s = 1 release at ny = 62 rings at ± 1000 N/m (the flag's thickness breathing), at 1e-6 all are clean, thick patches included ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-08 14:52:02 -07:00
Omar SobhandClaude Fable 5.1	3e019d1491	P5-3 instruments: per-region wall loads on saved instants (top / bottom / tip arc / fillets+cylinder — drag, lift, normal-traction mean/min/max; RTX_FSI2O_AUDIT_FACES, RTX_FSI2O_AUDIT_ONLY) and the patch-thickness knobs (RTX_FSI2O_PATCH_OFFSET / _PATCH_ROWS, RTX_OVERSET_PATCH_OFFSET / _PATCH_ROWS; save tags carry the offset) — the overlap band sat at a fixed number of cells (6 h) and moved inward in metres with refinement ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-08 05:35:14 -07:00
Omar SobhandClaude Fable 5.1	2c1143076e	P5 audit exact on the moving path: the composite rebuilt around a saved instant carries the march's dt (from the mesh the march started on — the warm base under RTX_FSI2O_WARM_SWEEPS — whatever patch the instant holds; 0.2 % of dt read as 0.3–5 N/m of solved-face residual), and instants save dt; over 131 instants of the FSI2 march to t = 16 s the solved-face residual is 1.7e-10 at every one ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-07 12:32:38 -07:00
Omar SobhandClaude Fable 5.1	06229dd9a2	rtx-cfd: the deformed cylinder–flag build's hull source carries the deformed outline — the cylinder + tip disc alone give the chord under a bent flag's convex side (P5-2 died at tip −35 mm with the patch 4.4 h thick where 6 h was asked, an acceptor's donor on a prescribed face); the death reproduced from the last saved instant by extrapolating the interface (fsi2_overset_probe_death_from_instant, with the failing acceptor's ray geometry and the overlap depths that build) and gone with the fix at every τ; RTX_FSI2O_ROWS; the zero-displacement mesh gate at 1e-5 (the pipeline's), the outline gate 1e-12 unchanged ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-07 10:25:46 -07:00
Omar SobhandClaude Fable 5.1	3c2add3f32	P5 audit: the overset march saves the composite at every N-th committed step (RTX_FSI2O_SAVE_EVERY: background, the deformed patch's nodes, its vectors, d, ddot, time), and fsi2_overset_audit_of_saved_instants (RTX_FSI2O_AUDIT=dir) rebuilds the composite around each saved patch (build_case_with an initial mesh, so the overlap is the instant's) and prints the solver-metric chain — the CFD23 instrument on the moving patch ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-07 09:13:07 -07:00
Omar SobhandClaude Fable 5.1	3a68048934	rtx-cfd: cylinder_flag_patch_deformed_from — the warm-started regeneration (P5's cost lever): the previous patch's interior and its outer ring projected onto the new offset polygon as the start, and an IDEMPOTENT build (one Winslow sweep alternating with the ray re-spacing; the P4-0 one-shot is not a fixed point — measured as the interior moving 0.05 h per build at rest), so a base converged as that map's fixed point stays put (9e-11 h at rest) and each build tracks the outline (interior/wall motion 0.99–1.14, worst angle 74.7°, wall row 0.37 h) 4.5× faster than the cold build; the rigid generator untouched (pins pass); fsi2 overset harness: RTX_FSI2O_WARM_SWEEPS with the converged base as the initial patch and the committed step's mesh as each step's warm start ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-07 09:10:05 -07:00
Omar SobhandClaude Fable 5.1	62f1d4bf9b	P5-1: RTX_FSI2O_NEWMARK_GAMMA — Newmark dissipation on the flag (β = (γ + ½)²/4); at γ = 0.9 the s = 1 overset march holds 0.3 s from the cached state (789 steps, 1.8 passes, no death) with the physical onset, where γ = ½ ran away in 90 steps: the flag's thickness breathing, resolved at s = 1 and felt by the body-fitted wall, damped at the source ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-07 08:45:45 -07:00
Omar SobhandClaude Fable 5.1	565215baf9	P5-1 instruments and discriminators: RTX_FSI2O_NO_WALL_VEL, _FREEZE_PATCH, _VOLUME_PRESERVE (the imposed wall velocity's net flux removed uniformly along the wall), the pass trace carries the fluid's power on the flag, the wall-pressure roughness, the patch's pressure level, the wall's net volume flux against the FEA polygon's area rate, and the mass defects — the s = 1 runaway is the flag's thickness breathing (ν = 0.4 Quad8) seen by the body-fitted wall as a volume flux equal to the polygon's area rate, answered by the projection's pressure level at ρ/dt ... Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_0116sg1Qz1gMv9hdcKP1XUam	2026-09-07 08:37:34 -07:00