embedded3 S2-6: the oblique-wall instrument (tests/embedded3_wall_position_oblique.rs: z-flow / in-plane Poiseuille + Couette linear exactness; gate oblique_wall_position_is_second_order) and the closures it found, host + device, default OFF — the transverse centroid correction (RTX_E3_DIFFUSION_TRANSVERSE=1, wall_order bit 7), the fine distance floor (RTX_E3_DISTANCE_FLOOR=fine, bit 8); kernel geometry factored into cut_cv; DFG 2D-1 x-shift knob (RTX_E3_DFG_SHIFT_X); FLAG_X0 0.6 -> 0.25 in the three flag tests (the flag of every record was detached)

Co-Authored-By: Claude Fable 5.1 <[email protected]>
2026-09-18 16:22:38 -05:00
parent 9ae0e42dcd
commit e9b2e7887b
12 changed files with 579 additions and 24 deletions
@@ -19,7 +19,11 @@ const L: f64 = 2.5;
 const CX: f64 = 0.2;
 const CY: f64 = 0.2;
 const R_CYL: f64 = 0.05;
-const FLAG_X0: f64 = 0.6;
+/// The flag's ROOT: the cylinder's rear (the Turek–Hron flag runs from the
+/// cylinder to its tip A at x = 0.6). Until 2026-09-18 this was 0.6 — the
+/// flag sat DETACHED, its root where the benchmark's tip is; every flag
+/// record before that date is of that geometry.
+const FLAG_X0: f64 = 0.25;
 const FLAG_LEN: f64 = 0.35;
 const FLAG_HALF: f64 = 0.01;
 const AMP: f64 = 0.084;